diff --git a/dlls/scrrun/filesystem.c b/dlls/scrrun/filesystem.c
index 0d360d339eee02d363a5d070f71d6f1e85e382ff..02364928987387ac4bf11f6a687190dde8c013c4 100644
--- a/dlls/scrrun/filesystem.c
+++ b/dlls/scrrun/filesystem.c
@@ -1822,7 +1822,7 @@ static HRESULT WINAPI filesys_GetStandardStream(IFileSystem3 *iface,
 
 static void get_versionstring(VS_FIXEDFILEINFO *info, WCHAR *ver)
 {
-    static WCHAR fmtW[] = {'%','d','.','%','d','.','%','d','.','%','d',0};
+    static const WCHAR fmtW[] = {'%','d','.','%','d','.','%','d','.','%','d',0};
     DWORDLONG version;
     WORD a, b, c, d;