diff --git a/dlls/msi/action.c b/dlls/msi/action.c
index 9a6d5d8dfb..c90801618f 100644
--- a/dlls/msi/action.c
+++ b/dlls/msi/action.c
@@ -1881,8 +1881,7 @@ static UINT ACTION_CostFinalize(MSIPACKAGE *package)
             DWORD versize;
             UINT sz;
             LPVOID version;
-            static const WCHAR name[] = 
-                {'\\',0};
+            static WCHAR name[] = {'\\',0};
             static const WCHAR name_fmt[] = 
                 {'%','u','.','%','u','.','%','u','.','%','u',0};
             WCHAR filever[0x100];
diff --git a/dlls/msi/appsearch.c b/dlls/msi/appsearch.c
index 1da8bfeb70..d4de09f142 100644
--- a/dlls/msi/appsearch.c
+++ b/dlls/msi/appsearch.c
@@ -549,7 +549,7 @@ static UINT ACTION_FileVersionMatches(MSISIGNATURE *sig, LPCWSTR filePath,
 
             if (buf)
             {
-                static const WCHAR rootW[] = { '\\',0 };
+                static WCHAR rootW[] = { '\\',0 };
                 UINT versionLen;
                 LPVOID subBlock = NULL;
 
diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index 820f4c365c..550cc02f0e 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -1185,7 +1185,7 @@ end:
 UINT WINAPI MsiGetFileVersionW(LPCWSTR szFilePath, LPWSTR lpVersionBuf,
                 DWORD* pcchVersionBuf, LPWSTR lpLangBuf, DWORD* pcchLangBuf)
 {
-    static const WCHAR szVersionResource[] = {'\\',0};
+    static WCHAR szVersionResource[] = {'\\',0};
     static const WCHAR szVersionFormat[] = {
         '%','d','.','%','d','.','%','d','.','%','d',0};
     static const WCHAR szLangFormat[] = {'%','d',0};
diff --git a/dlls/version/info.c b/dlls/version/info.c
index 81c5a4a9f7..c0306e21e6 100644
--- a/dlls/version/info.c
+++ b/dlls/version/info.c
@@ -752,7 +752,7 @@ static BOOL WINAPI VersionInfo32_QueryValue( VS_VERSION_INFO_STRUCT32 *info, LPC
 /***********************************************************************
  *           VerQueryValueA              [VERSION.@]
  */
-BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPCSTR lpSubBlock,
+BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPSTR lpSubBlock,
                                LPVOID *lplpBuffer, UINT *puLen )
 {
     static const char rootA[] = "\\";
@@ -799,7 +799,7 @@ BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPCSTR lpSubBlock,
 /***********************************************************************
  *           VerQueryValueW              [VERSION.@]
  */
-BOOL WINAPI VerQueryValueW( LPVOID pBlock, LPCWSTR lpSubBlock,
+BOOL WINAPI VerQueryValueW( LPVOID pBlock, LPWSTR lpSubBlock,
                                LPVOID *lplpBuffer, UINT *puLen )
 {
     static const WCHAR rootW[] = { '\\', 0 };
diff --git a/dlls/version/install.c b/dlls/version/install.c
index fb1fe3049b..60b03159a9 100644
--- a/dlls/version/install.c
+++ b/dlls/version/install.c
@@ -123,9 +123,9 @@ static int testFileExistenceW( const WCHAR *path, const WCHAR *file, BOOL excl )
  */
 DWORD WINAPI VerFindFileA(
     UINT flags,
-    LPCSTR lpszFilename,
-    LPCSTR lpszWinDir,
-    LPCSTR lpszAppDir,
+    LPSTR lpszFilename,
+    LPSTR lpszWinDir,
+    LPSTR lpszAppDir,
     LPSTR lpszCurDir,
     UINT *lpuCurDirLen,
     LPSTR lpszDestDir,
@@ -220,8 +220,8 @@ DWORD WINAPI VerFindFileA(
 /*****************************************************************************
  * VerFindFileW						[VERSION.@]
  */
-DWORD WINAPI VerFindFileW( UINT flags,LPCWSTR lpszFilename,LPCWSTR lpszWinDir,
-                           LPCWSTR lpszAppDir, LPWSTR lpszCurDir,UINT *lpuCurDirLen,
+DWORD WINAPI VerFindFileW( UINT flags,LPWSTR lpszFilename,LPWSTR lpszWinDir,
+                           LPWSTR lpszAppDir, LPWSTR lpszCurDir,UINT *lpuCurDirLen,
                            LPWSTR lpszDestDir,UINT *lpuDestDirLen )
 {
     static const WCHAR emptyW;
@@ -361,8 +361,8 @@ _error2vif(DWORD error) {
  * VerInstallFileA [VERSION.@]
  */
 DWORD WINAPI VerInstallFileA(
-	UINT flags,LPCSTR srcfilename,LPCSTR destfilename,LPCSTR srcdir,
- 	LPCSTR destdir,LPCSTR curdir,LPSTR tmpfile,UINT *tmpfilelen )
+	UINT flags,LPSTR srcfilename,LPSTR destfilename,LPSTR srcdir,
+ 	LPSTR destdir,LPSTR curdir,LPSTR tmpfile,UINT *tmpfilelen )
 {
     LPCSTR pdest;
     char	destfn[260],tmpfn[260],srcfn[260];
@@ -528,8 +528,8 @@ DWORD WINAPI VerInstallFileA(
  * VerInstallFileW				[VERSION.@]
  */
 DWORD WINAPI VerInstallFileW(
-	UINT flags,LPCWSTR srcfilename,LPCWSTR destfilename,LPCWSTR srcdir,
-	LPCWSTR destdir,LPCWSTR curdir,LPWSTR tmpfile,UINT *tmpfilelen )
+	UINT flags,LPWSTR srcfilename,LPWSTR destfilename,LPWSTR srcdir,
+	LPWSTR destdir,LPWSTR curdir,LPWSTR tmpfile,UINT *tmpfilelen )
 {
     LPSTR wsrcf = NULL, wsrcd = NULL, wdestf = NULL, wdestd = NULL, wtmpf = NULL, wcurd = NULL;
     DWORD ret;
diff --git a/dlls/version/ver16.c b/dlls/version/ver16.c
index ab9ff3deb1..3b0ca423b3 100644
--- a/dlls/version/ver16.c
+++ b/dlls/version/ver16.c
@@ -53,8 +53,8 @@ DWORD WINAPI GetFileVersionInfo16( LPCSTR lpszFileName, DWORD handle,
 /*************************************************************************
  * VerFindFile                             [VER.8]
  */
-DWORD WINAPI VerFindFile16( UINT16 flags, LPCSTR lpszFilename,
-                            LPCSTR lpszWinDir, LPCSTR lpszAppDir,
+DWORD WINAPI VerFindFile16( UINT16 flags, LPSTR lpszFilename,
+                            LPSTR lpszWinDir, LPSTR lpszAppDir,
                             LPSTR lpszCurDir, UINT16 *lpuCurDirLen,
                             LPSTR lpszDestDir, UINT16 *lpuDestDirLen )
 {
@@ -71,8 +71,8 @@ DWORD WINAPI VerFindFile16( UINT16 flags, LPCSTR lpszFilename,
  * VerInstallFile                          [VER.9]
  */
 DWORD WINAPI VerInstallFile16( UINT16 flags,
-                               LPCSTR lpszSrcFilename, LPCSTR lpszDestFilename,
-                               LPCSTR lpszSrcDir, LPCSTR lpszDestDir, LPCSTR lpszCurDir,
+                               LPSTR lpszSrcFilename, LPSTR lpszDestFilename,
+                               LPSTR lpszSrcDir, LPSTR lpszDestDir, LPSTR lpszCurDir,
                                LPSTR lpszTmpFile, UINT16 *lpwTmpFileLen )
 {
     UINT filelen;
@@ -95,7 +95,7 @@ DWORD WINAPI VerLanguageName16( UINT16 uLang, LPSTR lpszLang, UINT16 cbLang )
 /*************************************************************************
  * VerQueryValue                          [VER.11]
  */
-DWORD WINAPI VerQueryValue16( SEGPTR spvBlock, LPCSTR lpszSubBlock,
+DWORD WINAPI VerQueryValue16( SEGPTR spvBlock, LPSTR lpszSubBlock,
                               SEGPTR *lpspBuffer, UINT16 *lpcb )
 {
     LPVOID lpvBlock = MapSL( spvBlock );
@@ -121,4 +121,3 @@ DWORD WINAPI VerQueryValue16( SEGPTR spvBlock, LPCSTR lpszSubBlock,
 
     return retv;
 }
-
diff --git a/include/winver.h b/include/winver.h
index fd9c45647a..25d2d1eb42 100644
--- a/include/winver.h
+++ b/include/winver.h
@@ -150,17 +150,17 @@ typedef struct tagVS_FIXEDFILEINFO {
 
 /* function prototypes */
 
-DWORD       WINAPI VerFindFileA(UINT,LPCSTR,LPCSTR,LPCSTR,LPSTR,UINT*,LPSTR,UINT*);
-DWORD       WINAPI VerFindFileW(UINT,LPCWSTR,LPCWSTR,LPCWSTR,LPWSTR,UINT*,LPWSTR,UINT*);
+DWORD       WINAPI VerFindFileA(UINT,LPSTR,LPSTR,LPSTR,LPSTR,UINT*,LPSTR,UINT*);
+DWORD       WINAPI VerFindFileW(UINT,LPWSTR,LPWSTR,LPWSTR,LPWSTR,UINT*,LPWSTR,UINT*);
 #define     VerFindFile WINELIB_NAME_AW(VerFindFile)
-DWORD       WINAPI VerInstallFileA(UINT,LPCSTR,LPCSTR,LPCSTR,LPCSTR,LPCSTR,LPSTR,UINT*);
-DWORD       WINAPI VerInstallFileW(UINT,LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR,LPWSTR,UINT*);
+DWORD       WINAPI VerInstallFileA(UINT,LPSTR,LPSTR,LPSTR,LPSTR,LPSTR,LPSTR,UINT*);
+DWORD       WINAPI VerInstallFileW(UINT,LPWSTR,LPWSTR,LPWSTR,LPWSTR,LPWSTR,LPWSTR,UINT*);
 #define     VerInstallFile WINELIB_NAME_AW(VerInstallFile)
 DWORD       WINAPI VerLanguageNameA(UINT,LPSTR,UINT);
 DWORD       WINAPI VerLanguageNameW(UINT,LPWSTR,UINT);
 #define     VerLanguageName WINELIB_NAME_AW(VerLanguageName)
-BOOL        WINAPI VerQueryValueA(LPVOID,LPCSTR,LPVOID*,UINT*);
-BOOL        WINAPI VerQueryValueW(LPVOID,LPCWSTR,LPVOID*,UINT*);
+BOOL        WINAPI VerQueryValueA(LPVOID,LPSTR,LPVOID*,UINT*);
+BOOL        WINAPI VerQueryValueW(LPVOID,LPWSTR,LPVOID*,UINT*);
 #define     VerQueryValue WINELIB_NAME_AW(VerQueryValue)
 DWORD       WINAPI GetFileVersionInfoSizeA(LPCSTR,LPDWORD);
 DWORD       WINAPI GetFileVersionInfoSizeW(LPCWSTR,LPDWORD);