diff --git a/dlls/odbc32/proxyodbc.h b/dlls/odbc32/proxyodbc.h
index 5a750e269f3..e327e1b3ae5 100644
--- a/dlls/odbc32/proxyodbc.h
+++ b/dlls/odbc32/proxyodbc.h
@@ -30,7 +30,7 @@
 typedef struct dm_func                          /* driver manager functions */
 {
     int            ordinal;
-    char           *name;
+    const char     *name;
     void           *d_func;
     SQLRETURN      (*func)();
 } DM_FUNC;
diff --git a/dlls/quartz/main.c b/dlls/quartz/main.c
index eb3befe223a..80fd645ecd8 100644
--- a/dlls/quartz/main.c
+++ b/dlls/quartz/main.c
@@ -202,7 +202,7 @@ HRESULT WINAPI QUARTZ_DllCanUnloadNow()
 
 static struct {
 	const GUID	riid;
-	char 	*name;
+	const char 	*name;
 } InterfaceDesc[] =
 {
     #define OUR_GUID_ENTRY(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
diff --git a/dlls/rpcrt4/rpc_binding.c b/dlls/rpcrt4/rpc_binding.c
index b667b480e43..6ce3b20c04a 100644
--- a/dlls/rpcrt4/rpc_binding.c
+++ b/dlls/rpcrt4/rpc_binding.c
@@ -52,7 +52,7 @@ static CRITICAL_SECTION_DEBUG critsect_debug =
 };
 static CRITICAL_SECTION conn_cache_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
 
-LPSTR RPCRT4_strndupA(LPSTR src, INT slen)
+LPSTR RPCRT4_strndupA(LPCSTR src, INT slen)
 {
   DWORD len;
   LPSTR s;
@@ -195,7 +195,7 @@ RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
       /* protseq=ncalrpc: supposed to use NT LPC ports,
        * but we'll implement it with named pipes for now */
       if (strcmp(Connection->Protseq, "ncalrpc") == 0) {
-        static LPSTR prefix = "\\\\.\\pipe\\lrpc\\";
+        static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
         LPSTR pname;
         pname = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + strlen(Connection->Endpoint) + 1);
         strcat(strcpy(pname, prefix), Connection->Endpoint);
@@ -216,7 +216,7 @@ RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
       }
       /* protseq=ncacn_np: named pipes */
       else if (strcmp(Connection->Protseq, "ncacn_np") == 0) {
-        static LPSTR prefix = "\\\\.";
+        static LPCSTR prefix = "\\\\.";
         LPSTR pname;
         pname = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + strlen(Connection->Endpoint) + 1);
         strcat(strcpy(pname, prefix), Connection->Endpoint);
@@ -244,7 +244,7 @@ RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
       /* protseq=ncalrpc: supposed to use NT LPC ports,
        * but we'll implement it with named pipes for now */
       if (strcmp(Connection->Protseq, "ncalrpc") == 0) {
-        static LPSTR prefix = "\\\\.\\pipe\\lrpc\\";
+        static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
         LPSTR pname;
         HANDLE conn;
         DWORD err;
@@ -278,7 +278,7 @@ RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
       }
       /* protseq=ncacn_np: named pipes */
       else if (strcmp(Connection->Protseq, "ncacn_np") == 0) {
-        static LPSTR prefix = "\\\\.";
+        static LPCSTR prefix = "\\\\.";
         LPSTR pname;
         HANDLE conn;
         DWORD err;
diff --git a/dlls/rpcrt4/rpc_binding.h b/dlls/rpcrt4/rpc_binding.h
index c39feaf0910..54d514b1baf 100644
--- a/dlls/rpcrt4/rpc_binding.h
+++ b/dlls/rpcrt4/rpc_binding.h
@@ -51,7 +51,7 @@ typedef struct _RpcBinding
   RpcConnection* FromConn;
 } RpcBinding;
 
-LPSTR RPCRT4_strndupA(LPSTR src, INT len);
+LPSTR RPCRT4_strndupA(LPCSTR src, INT len);
 LPWSTR RPCRT4_strndupW(LPWSTR src, INT len);
 LPSTR RPCRT4_strdupWtoA(LPWSTR src);
 LPWSTR RPCRT4_strdupAtoW(LPSTR src);
diff --git a/dlls/shlwapi/reg.c b/dlls/shlwapi/reg.c
index 77a16236f9a..75fca1c3da1 100644
--- a/dlls/shlwapi/reg.c
+++ b/dlls/shlwapi/reg.c
@@ -1048,7 +1048,7 @@ DWORD WINAPI SHSetValueA(HKEY hKey, LPCSTR lpszSubKey, LPCSTR lpszValue,
 {
   DWORD dwRet = ERROR_SUCCESS, dwDummy;
   HKEY  hSubKey;
-  LPSTR szEmpty = "";
+  char  szEmpty[] = "";
 
   TRACE("(hkey=%p,%s,%s,%ld,%p,%ld)\n", hKey, debugstr_a(lpszSubKey),
           debugstr_a(lpszValue), dwType, pvData, cbData);
diff --git a/dlls/shlwapi/tests/path.c b/dlls/shlwapi/tests/path.c
index d6644a7caf7..33082e95fb0 100644
--- a/dlls/shlwapi/tests/path.c
+++ b/dlls/shlwapi/tests/path.c
@@ -71,7 +71,7 @@ static void test_UrlHash(void)
   hash_url(TEST_URL_3);
 }
 
-static void test_url_part(const char* szUrl, DWORD dwPart, DWORD dwFlags, char* szExpected)
+static void test_url_part(const char* szUrl, DWORD dwPart, DWORD dwFlags, const char* szExpected)
 {
   CHAR szPart[INTERNET_MAX_URL_LENGTH];
   WCHAR wszPart[INTERNET_MAX_URL_LENGTH];
diff --git a/dlls/shlwapi/tests/shreg.c b/dlls/shlwapi/tests/shreg.c
index 0f030834d5c..8d31fe6e094 100644
--- a/dlls/shlwapi/tests/shreg.c
+++ b/dlls/shlwapi/tests/shreg.c
@@ -40,15 +40,15 @@ static SHCopyKeyA_func pSHCopyKeyA;
 typedef DWORD (WINAPI *SHRegGetPathA_func)(HKEY,LPCSTR,LPCSTR,LPSTR,DWORD);
 static SHRegGetPathA_func pSHRegGetPathA;
 
-static char * sTestpath1 = "%LONGSYSTEMVAR%\\subdir1";
-static char * sTestpath2 = "%FOO%\\subdir1";
+static const char * sTestpath1 = "%LONGSYSTEMVAR%\\subdir1";
+static const char * sTestpath2 = "%FOO%\\subdir1";
 
 static char sExpTestpath1[MAX_PATH];
 static char sExpTestpath2[MAX_PATH];
 static unsigned sExpLen1;
 static unsigned sExpLen2;
 
-static char * sEmptyBuffer ="0123456789";
+static const char * sEmptyBuffer ="0123456789";
 
 /* delete key and all its subkeys */
 static DWORD delete_key( HKEY hkey )
@@ -135,7 +135,7 @@ static void test_SHQUeryValueEx(void)
 	DWORD dwType;
 	char buf[MAX_PATH];
 	DWORD dwRet;
-	char * sTestedFunction = "";
+	const char * sTestedFunction = "";
 	DWORD nUsedBuffer1,nUsedBuffer2;
 
 	ok(! RegOpenKeyExA(HKEY_CURRENT_USER, REG_TEST_KEY, 0,  KEY_QUERY_VALUE, &hKey), "test4 RegOpenKey");
diff --git a/dlls/winmm/mcianim/mcianim.c b/dlls/winmm/mcianim/mcianim.c
index 3bc6c02e581..4d4bf518cf5 100644
--- a/dlls/winmm/mcianim/mcianim.c
+++ b/dlls/winmm/mcianim/mcianim.c
@@ -346,7 +346,7 @@ static DWORD MCIANIM_CalcFrame(WINE_MCIANIM* wma, DWORD dwFormatType, DWORD dwTi
 static DWORD MCIANIM_mciInfo(UINT16 wDevID, DWORD dwFlags, LPMCI_INFO_PARMSA lpParms)
 {
     WINE_MCIANIM*	wma = MCIANIM_mciGetOpenDrv(wDevID);
-    LPSTR		str = 0;
+    LPCSTR		str = 0;
     DWORD		ret = 0;
 
     TRACE("(%u, %08lX, %p);\n", wDevID, dwFlags, lpParms);
diff --git a/dlls/winmm/mciavi/info.c b/dlls/winmm/mciavi/info.c
index 6d5a582874c..955eaba4bfd 100644
--- a/dlls/winmm/mciavi/info.c
+++ b/dlls/winmm/mciavi/info.c
@@ -145,7 +145,7 @@ DWORD	MCIAVI_mciGetDevCaps(UINT wDevID, DWORD dwFlags,  LPMCI_GETDEVCAPS_PARMS l
  */
 DWORD	MCIAVI_mciInfo(UINT wDevID, DWORD dwFlags, LPMCI_DGV_INFO_PARMSA lpParms)
 {
-    LPSTR		str = 0;
+    LPCSTR		str = 0;
     WINE_MCIAVI*	wma = MCIAVI_mciGetOpenDev(wDevID);
     DWORD		ret = 0;
 
@@ -281,7 +281,7 @@ DWORD	MCIAVI_mciSet(UINT wDevID, DWORD dwFlags, LPMCI_DGV_SET_PARMS lpParms)
 	FIXME("%s\n", buffer);
     }
     if (dwFlags & MCI_DGV_SET_FILEFORMAT) {
-	LPSTR	str = "save";
+	LPCSTR	str = "save";
 	if (dwFlags & MCI_DGV_SET_STILL)
 	    str = "capture";
 
diff --git a/dlls/winmm/mcicda/mcicda.c b/dlls/winmm/mcicda/mcicda.c
index 2c983f31547..f0297d4c4c6 100644
--- a/dlls/winmm/mcicda/mcicda.c
+++ b/dlls/winmm/mcicda/mcicda.c
@@ -463,7 +463,7 @@ static DWORD CDROM_Audio_GetSerial(CDROM_TOC* toc)
  */
 static DWORD MCICDA_Info(UINT wDevID, DWORD dwFlags, LPMCI_INFO_PARMSA lpParms)
 {
-    LPSTR		str = NULL;
+    LPCSTR		str = NULL;
     WINE_MCICDAUDIO*	wmcda = MCICDA_GetOpenDrv(wDevID);
     DWORD		ret = 0;
     char		buffer[16];
diff --git a/dlls/winmm/mciseq/mcimidi.c b/dlls/winmm/mciseq/mcimidi.c
index a586773977d..e6184eaba1d 100644
--- a/dlls/winmm/mciseq/mcimidi.c
+++ b/dlls/winmm/mciseq/mcimidi.c
@@ -1042,7 +1042,7 @@ static DWORD MIDI_mciPlay(UINT wDevID, DWORD dwFlags, LPMCI_PLAY_PARMS lpParms)
 		if (TRACE_ON(mcimidi)) {
 		    char	buf[1024];
 		    WORD	len = mmt->wEventLength - HIWORD(mmt->dwEventData);
-		    static	char*	info[8] = {"", "Text", "Copyright", "Seq/Trk name",
+		    static const char*	info[8] = {"", "Text", "Copyright", "Seq/Trk name",
 						   "Instrument", "Lyric", "Marker", "Cue-point"};
 		    WORD	idx = HIBYTE(LOWORD(mmt->dwEventData));
 
diff --git a/dlls/winmm/winealsa/audio.c b/dlls/winmm/winealsa/audio.c
index e59d909e025..a016a8e19a3 100644
--- a/dlls/winmm/winealsa/audio.c
+++ b/dlls/winmm/winealsa/audio.c
@@ -408,11 +408,12 @@ LONG ALSA_WaveInit(void)
     snd_pcm_info_t *            info;
     snd_pcm_hw_params_t *       hw_params;
     WINE_WAVEOUT*	        wwo;
+    char			device[] = "hw";
 
     wwo = &WOutDev[0];
 
     /* FIXME: use better values */
-    wwo->device = "hw";
+    wwo->device = device;
     wwo->caps.wMid = 0x0002;
     wwo->caps.wPid = 0x0104;
     strcpy(wwo->caps.szPname, "SB16 Wave Out");
diff --git a/dlls/winmm/wineoss/mixer.c b/dlls/winmm/wineoss/mixer.c
index 39584ed8974..321542af126 100644
--- a/dlls/winmm/wineoss/mixer.c
+++ b/dlls/winmm/wineoss/mixer.c
@@ -70,8 +70,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(mmaux);
 
 /* FIXME: the two following string arrays should be moved to a resource file in a string table */
 /* if it's done, better use a struct to hold labels, name, and muted channel volume cache */
-static char*	MIX_Labels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
-static char*	MIX_Names [SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
+static const char*	MIX_Labels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
+static const char*	MIX_Names [SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
 
 struct mixerCtrl
 {