diff --git a/dlls/advapi32/tests/security.c b/dlls/advapi32/tests/security.c
index 027af2e5d2c..a1a44bb42a1 100644
--- a/dlls/advapi32/tests/security.c
+++ b/dlls/advapi32/tests/security.c
@@ -1174,7 +1174,7 @@ static void test_CreateWellKnownSid()
             cb = sizeof(sid_buffer);
             if (!pCreateWellKnownSid(i, domainsid, sid_buffer, &cb))
             {
-                skip("Well know SIDs starting from %d are not implemented\n", i);
+                skip("Well known SIDs starting from %d are not implemented\n", i);
                 break;
             }
         }
diff --git a/dlls/d3dx9_24/d3dx9_24_main.c b/dlls/d3dx9_24/d3dx9_24_main.c
index 1d4e9786a03..bd3e5bd0a9b 100644
--- a/dlls/d3dx9_24/d3dx9_24_main.c
+++ b/dlls/d3dx9_24/d3dx9_24_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_25/d3dx9_25_main.c b/dlls/d3dx9_25/d3dx9_25_main.c
index 7d1955aac23..2820664b6b1 100644
--- a/dlls/d3dx9_25/d3dx9_25_main.c
+++ b/dlls/d3dx9_25/d3dx9_25_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_26/d3dx9_26_main.c b/dlls/d3dx9_26/d3dx9_26_main.c
index 570bfeac92e..3924412511e 100644
--- a/dlls/d3dx9_26/d3dx9_26_main.c
+++ b/dlls/d3dx9_26/d3dx9_26_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_27/d3dx9_27_main.c b/dlls/d3dx9_27/d3dx9_27_main.c
index e872a9dded8..1dfe8e02b19 100644
--- a/dlls/d3dx9_27/d3dx9_27_main.c
+++ b/dlls/d3dx9_27/d3dx9_27_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_28/d3dx9_28_main.c b/dlls/d3dx9_28/d3dx9_28_main.c
index d861b37841d..044c47059c5 100644
--- a/dlls/d3dx9_28/d3dx9_28_main.c
+++ b/dlls/d3dx9_28/d3dx9_28_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_29/d3dx9_29_main.c b/dlls/d3dx9_29/d3dx9_29_main.c
index a1dc9ae9d5e..a111c3a70f4 100644
--- a/dlls/d3dx9_29/d3dx9_29_main.c
+++ b/dlls/d3dx9_29/d3dx9_29_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_30/d3dx9_30_main.c b/dlls/d3dx9_30/d3dx9_30_main.c
index 1cafa4156d7..f22a9344cbb 100644
--- a/dlls/d3dx9_30/d3dx9_30_main.c
+++ b/dlls/d3dx9_30/d3dx9_30_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_31/d3dx9_31_main.c b/dlls/d3dx9_31/d3dx9_31_main.c
index 13f8e170853..44dd5342027 100644
--- a/dlls/d3dx9_31/d3dx9_31_main.c
+++ b/dlls/d3dx9_31/d3dx9_31_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_32/d3dx9_32_main.c b/dlls/d3dx9_32/d3dx9_32_main.c
index f03c4397631..74745fb3da2 100644
--- a/dlls/d3dx9_32/d3dx9_32_main.c
+++ b/dlls/d3dx9_32/d3dx9_32_main.c
@@ -55,7 +55,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_33/d3dx9_33_main.c b/dlls/d3dx9_33/d3dx9_33_main.c
index e8e144be434..862e0f13923 100644
--- a/dlls/d3dx9_33/d3dx9_33_main.c
+++ b/dlls/d3dx9_33/d3dx9_33_main.c
@@ -55,7 +55,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_34/d3dx9_34_main.c b/dlls/d3dx9_34/d3dx9_34_main.c
index e34b4d647ca..05c0e724449 100644
--- a/dlls/d3dx9_34/d3dx9_34_main.c
+++ b/dlls/d3dx9_34/d3dx9_34_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_35/d3dx9_35_main.c b/dlls/d3dx9_35/d3dx9_35_main.c
index bde53688c38..6d5e4d5f389 100644
--- a/dlls/d3dx9_35/d3dx9_35_main.c
+++ b/dlls/d3dx9_35/d3dx9_35_main.c
@@ -54,7 +54,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/d3dx9_36/d3dx9_36_main.c b/dlls/d3dx9_36/d3dx9_36_main.c
index fbf0eedd479..0cdba0c9e04 100644
--- a/dlls/d3dx9_36/d3dx9_36_main.c
+++ b/dlls/d3dx9_36/d3dx9_36_main.c
@@ -56,7 +56,7 @@ BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 
 /***********************************************************************
  * D3DXCheckVersion
- * Checks wether we are compiling against the correct d3d and d3dx library.
+ * Checks whether we are compiling against the correct d3d and d3dx library.
  */
 BOOL WINAPI D3DXCheckVersion(UINT d3dsdkvers, UINT d3dxsdkvers)
 {
diff --git a/dlls/msxml3/cdata.c b/dlls/msxml3/cdata.c
index f7f36b206c2..1d646e25768 100644
--- a/dlls/msxml3/cdata.c
+++ b/dlls/msxml3/cdata.c
@@ -626,7 +626,7 @@ static HRESULT WINAPI domcdata_insertData(
 
     TRACE("%p\n", This);
 
-    /* If have a NULL or empty string, dont do anything. */
+    /* If have a NULL or empty string, don't do anything. */
     if(SysStringLen(p) == 0)
         return S_OK;
 
diff --git a/dlls/msxml3/node.c b/dlls/msxml3/node.c
index 0bff8e96e53..4cec2d3bef4 100644
--- a/dlls/msxml3/node.c
+++ b/dlls/msxml3/node.c
@@ -293,7 +293,7 @@ static HRESULT WINAPI xmlnode_put_nodeValue(
     TRACE("%p type(%d)\n", This, This->node->type);
 
     /* Document, Document Fragment, Document Type, Element,
-        Entity, Entity Reference, Notation arent supported. */
+        Entity, Entity Reference, Notation aren't supported. */
     switch ( This->node->type )
     {
     case XML_ATTRIBUTE_NODE:
diff --git a/dlls/msxml3/tests/domdoc.c b/dlls/msxml3/tests/domdoc.c
index 9e3e72d0b40..00eb52acc22 100644
--- a/dlls/msxml3/tests/domdoc.c
+++ b/dlls/msxml3/tests/domdoc.c
@@ -788,7 +788,7 @@ static void test_domdoc( void )
 
         /* test put_data */
         V_VT(&var) = VT_BSTR;
-        V_BSTR(&var) = SysAllocString(szOpen);  /* Doesnt matter what the string is, cannot set an xml node. */
+        V_BSTR(&var) = SysAllocString(szOpen);  /* Doesn't matter what the string is, cannot set an xml node. */
         r = IXMLDOMProcessingInstruction_put_nodeValue(nodePI, var);
         ok(r == E_FAIL, "ret %08x\n", r );
         VariantClear(&var);
diff --git a/dlls/msxml3/text.c b/dlls/msxml3/text.c
index 92dec4834f7..52163a2c604 100644
--- a/dlls/msxml3/text.c
+++ b/dlls/msxml3/text.c
@@ -628,7 +628,7 @@ static HRESULT WINAPI domtext_insertData(
 
     TRACE("%p\n", This);
 
-    /* If have a NULL or empty string, dont do anything. */
+    /* If have a NULL or empty string, don't do anything. */
     if(SysStringLen(p) == 0)
         return S_OK;
 
diff --git a/dlls/qmgr/tests/enum_files.c b/dlls/qmgr/tests/enum_files.c
index ff2cb1659f8..eeb80095829 100644
--- a/dlls/qmgr/tests/enum_files.c
+++ b/dlls/qmgr/tests/enum_files.c
@@ -282,7 +282,7 @@ START_TEST(enum_files)
     CoInitialize(NULL);
     for (test = tests; *test; ++test)
     {
-        /* Keep state seperate between tests.  */
+        /* Keep state separate between tests. */
         if (!setup())
         {
             skip("Unable to setup test\n");
diff --git a/dlls/qmgr/tests/enum_jobs.c b/dlls/qmgr/tests/enum_jobs.c
index 343d97a06da..2b7363155e3 100644
--- a/dlls/qmgr/tests/enum_jobs.c
+++ b/dlls/qmgr/tests/enum_jobs.c
@@ -307,7 +307,7 @@ START_TEST(enum_jobs)
     CoInitialize(NULL);
     for (test = tests; *test; ++test)
     {
-        /* Keep state seperate between tests.  */
+        /* Keep state separate between tests */
         if (!setup())
         {
             teardown();
diff --git a/dlls/qmgr/tests/file.c b/dlls/qmgr/tests/file.c
index 6b47b9e77d0..05aec1c8b40 100644
--- a/dlls/qmgr/tests/file.c
+++ b/dlls/qmgr/tests/file.c
@@ -159,7 +159,7 @@ static void test_GetProgress_PreTransfer(void)
         return;
     }
     ok(progress.BytesTotal == BG_SIZE_UNKNOWN, "Got incorrect total size: %llu\n", progress.BytesTotal);
-    ok(progress.BytesTransferred == 0, "Got incorrect number of transfered bytes: %llu\n", progress.BytesTransferred);
+    ok(progress.BytesTransferred == 0, "Got incorrect number of transferred bytes: %llu\n", progress.BytesTransferred);
     ok(progress.Completed == FALSE, "Got incorret completion status\n");
 }
 
@@ -178,7 +178,7 @@ START_TEST(file)
     CoInitialize(NULL);
     for (test = tests; *test; ++test)
     {
-        /* Keep state seperate between tests.  */
+        /* Keep state separate between tests. */
         if (!setup())
         {
             skip("Unable to setup test\n");
diff --git a/dlls/qmgr/tests/job.c b/dlls/qmgr/tests/job.c
index fe58fa3398a..e504b862b74 100644
--- a/dlls/qmgr/tests/job.c
+++ b/dlls/qmgr/tests/job.c
@@ -496,7 +496,7 @@ START_TEST(job)
     CoInitialize(NULL);
     for (test = tests; *test; ++test)
     {
-        /* Keep state seperate between tests.  */
+        /* Keep state separate between tests. */
         if (!setup())
         {
             skip("Unable to setup test\n");
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 5a0b7c5adf7..7fe504a2fdf 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -3358,7 +3358,7 @@ static void shader_glsl_free(IWineD3DDevice *iface) {
 }
 
 static BOOL shader_glsl_dirty_const(IWineD3DDevice *iface) {
-    /* TODO: GL_EXT_bindable_uniform can be used to share constants accross shaders */
+    /* TODO: GL_EXT_bindable_uniform can be used to share constants across shaders */
     return FALSE;
 }
 
diff --git a/programs/cmd/wcmdmain.c b/programs/cmd/wcmdmain.c
index 4c482ee9ead..8d09967f661 100644
--- a/programs/cmd/wcmdmain.c
+++ b/programs/cmd/wcmdmain.c
@@ -662,7 +662,7 @@ void WCMD_execute (WCHAR *command, WCHAR *redirects,
  *	Redirect stdin, stdout and/or stderr if required.
  */
 
-    /* STDIN could come from a preceeding pipe, so delete on close if it does */
+    /* STDIN could come from a preceding pipe, so delete on close if it does */
     if (cmdList && (*cmdList)->pipeFile[0] != 0x00) {
         WINE_TRACE("Input coming from %s\n", wine_dbgstr_w((*cmdList)->pipeFile));
         h = CreateFile ((*cmdList)->pipeFile, GENERIC_READ,