diff --git a/dlls/msxml3/msxml_private.h b/dlls/msxml3/msxml_private.h
index 167e74f0fec..a57dc60bc9b 100644
--- a/dlls/msxml3/msxml_private.h
+++ b/dlls/msxml3/msxml_private.h
@@ -205,22 +205,6 @@ static inline LPWSTR heap_strdupW(LPCWSTR str)
     return ret;
 }
 
-static inline LPSTR heap_strdupWtoA(LPCWSTR str)
-{
-    LPSTR ret = NULL;
-
-    if(str) {
-        DWORD len = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
-        ret = heap_alloc(len+1);
-        if(!ret)
-            return NULL;
-
-        WideCharToMultiByte(CP_ACP, 0, str, -1, ret, len+1, NULL, NULL);
-    }
-
-    return ret;
-}
-
 /* XSLProcessor parameter list */
 struct xslprocessor_par
 {