diff --git a/dlls/gdiplus/tests/font.c b/dlls/gdiplus/tests/font.c
index 96ed64c91d7..04876559203 100644
--- a/dlls/gdiplus/tests/font.c
+++ b/dlls/gdiplus/tests/font.c
@@ -154,7 +154,7 @@ static void test_fontfamily (void)
     WCHAR itsName[LF_FACESIZE];
     GpStatus stat;
 
-    /* FontFamily can not be NULL */
+    /* FontFamily cannot be NULL */
     stat = GdipCreateFontFamilyFromName (arial , NULL, NULL);
     expect (InvalidParameter, stat);
 
diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index d2f10b6e88e..5d2796dac0c 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -1192,7 +1192,7 @@ static HRESULT WINAPI FilterGraph2_Render(IFilterGraph2 *iface, IPin *ppinOut)
                 hr = IPin_Connect(ppinOut, pin, NULL);
                 if (SUCCEEDED(hr))
                 {
-                    TRACE("Connected succesfully %p/%p, %08x look if we should render more!\n", ppinOut, pin, hr);
+                    TRACE("Connected successfully %p/%p, %08x look if we should render more!\n", ppinOut, pin, hr);
                     IPin_Release(pin);
 
                     hr = FilterGraph2_RenderRecurse(This, pin);
diff --git a/dlls/riched20/tests/editor.c b/dlls/riched20/tests/editor.c
index 0776fe47f14..16085d36a5b 100644
--- a/dlls/riched20/tests/editor.c
+++ b/dlls/riched20/tests/editor.c
@@ -3687,7 +3687,7 @@ static void test_EM_STREAMIN(void)
   struct StringWithLength cookieForStream4;
   const char * streamText4 =
       "This text just needs to be long enough to cause run to be split onto "\
-      "two seperate lines and make sure the null terminating character is "\
+      "two separate lines and make sure the null terminating character is "\
       "handled properly.\0";
   int length4 = strlen(streamText4) + 1;
   cookieForStream4.buffer = (char *)streamText4;
diff --git a/dlls/secur32/secur32.c b/dlls/secur32/secur32.c
index b9c4748423a..8b3c2bbd0cd 100644
--- a/dlls/secur32/secur32.c
+++ b/dlls/secur32/secur32.c
@@ -634,7 +634,7 @@ SecurePackage *SECUR32_findPackageW(PCWSTR packageName)
                     fnTableA = pInitSecurityInterfaceA();
                 if (pInitSecurityInterfaceW)
                     fnTableW = pInitSecurityInterfaceW();
-                /* dont't update built-in SecurityFunctionTable */
+                /* don't update built-in SecurityFunctionTable */
                 if (fnTableA != &securityFunctionTableA)
                     _makeFnTableA(&ret->provider->fnTableA, fnTableA, fnTableW);
                 if (fnTableW != &securityFunctionTableW)
diff --git a/dlls/wined3d/directx.c b/dlls/wined3d/directx.c
index 10cd52e3c48..76e1c80225d 100644
--- a/dlls/wined3d/directx.c
+++ b/dlls/wined3d/directx.c
@@ -3622,7 +3622,7 @@ struct driver_version_information {
 
 static const struct driver_version_information driver_version_table[] = {
     /* Nvidia drivers. Geforce6 and newer cards are supported by the current driver (177.x)*/
-    /* GeforceFX support is up to 173.x, Geforce2MX/3/4 upto 96.x, TNT/Geforce1/2 upto 71.x */
+    /* GeforceFX support is up to 173.x, Geforce2MX/3/4 up to 96.x, TNT/Geforce1/2 up to 71.x */
     /* Note that version numbers >100 lets say 123.45 use >= x.y.11.2345 and not x.y.10.12345 */
     {VENDOR_NVIDIA,     CARD_NVIDIA_GEFORCEFX_5200,     7,  15, 11, 7341   },
     {VENDOR_NVIDIA,     CARD_NVIDIA_GEFORCEFX_5600,     7,  15, 11, 7341   },
diff --git a/dlls/winemp3.acm/mpegl3.c b/dlls/winemp3.acm/mpegl3.c
index 5ad44334053..1ea19c09079 100644
--- a/dlls/winemp3.acm/mpegl3.c
+++ b/dlls/winemp3.acm/mpegl3.c
@@ -168,7 +168,7 @@ static void mp3_horse(PACMDRVSTREAMINSTANCE adsi,
     if (ret != MP3_OK)
     {
         if (ret == MP3_ERR)
-            FIXME("Error occured during decoding!\n");
+            FIXME("Error occurred during decoding!\n");
         *ndst = *nsrc = 0;
         return;
     }
diff --git a/dlls/winex11.drv/wintab.c b/dlls/winex11.drv/wintab.c
index e73f000d9a9..4a77c1b2446 100644
--- a/dlls/winex11.drv/wintab.c
+++ b/dlls/winex11.drv/wintab.c
@@ -301,7 +301,7 @@ static INT           button_state[10];
  * Now say someone has 2 multimode tablets with 2 erasers each
  * now we would need Cursor #2, #5, #8, #11
  * So to support that we need CURSORMAX of 12 (0 to 11)
- * FIXME: we dont support more than 4 regular tablets or 2 multimode tablets */
+ * FIXME: we don't support more than 4 regular tablets or 2 multimode tablets */
 #define             CURSORMAX 12
 
 static LOGCONTEXTW      gSysContext;