diff --git a/dlls/version/info.c b/dlls/version/info.c
index 92553ea9581..84a7eedd3df 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, LPSTR lpSubBlock,
+BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPCSTR lpSubBlock,
                                LPVOID *lplpBuffer, UINT *puLen )
 {
     static const char rootA[] = "\\";
@@ -799,7 +799,7 @@ BOOL WINAPI VerQueryValueA( LPVOID pBlock, LPSTR lpSubBlock,
 /***********************************************************************
  *           VerQueryValueW              [VERSION.@]
  */
-BOOL WINAPI VerQueryValueW( LPVOID pBlock, LPWSTR lpSubBlock,
+BOOL WINAPI VerQueryValueW( LPVOID pBlock, LPCWSTR lpSubBlock,
                                LPVOID *lplpBuffer, UINT *puLen )
 {
     static const WCHAR rootW[] = { '\\', 0 };
diff --git a/include/winver.h b/include/winver.h
index 6c1217e7103..ff4233a69d9 100644
--- a/include/winver.h
+++ b/include/winver.h
@@ -159,8 +159,8 @@ DWORD       WINAPI VerInstallFileW(UINT,LPWSTR,LPWSTR,LPWSTR,LPWSTR,LPWSTR,LPWST
 DWORD       WINAPI VerLanguageNameA(UINT,LPSTR,UINT);
 DWORD       WINAPI VerLanguageNameW(UINT,LPWSTR,UINT);
 #define     VerLanguageName WINELIB_NAME_AW(VerLanguageName)
-BOOL        WINAPI VerQueryValueA(LPVOID,LPSTR,LPVOID*,UINT*);
-BOOL        WINAPI VerQueryValueW(LPVOID,LPWSTR,LPVOID*,UINT*);
+BOOL        WINAPI VerQueryValueA(LPVOID,LPCSTR,LPVOID*,UINT*);
+BOOL        WINAPI VerQueryValueW(LPVOID,LPCWSTR,LPVOID*,UINT*);
 #define     VerQueryValue WINELIB_NAME_AW(VerQueryValue)
 DWORD       WINAPI GetFileVersionInfoSizeA(LPCSTR,LPDWORD);
 DWORD       WINAPI GetFileVersionInfoSizeW(LPCWSTR,LPDWORD);