diff --git a/dlls/wininet/urlcache.c b/dlls/wininet/urlcache.c
index 429867a..a35ef08 100644
--- a/dlls/wininet/urlcache.c
+++ b/dlls/wininet/urlcache.c
@@ -3113,6 +3113,7 @@ BOOL WINAPI FindNextUrlCacheEntryW(
   LPDWORD lpdwNextCacheEntryInfoBufferSize
 )
 {
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
     FIXME("(%p, %p, %p) stub\n", hEnumHandle, lpNextCacheEntryInfo, lpdwNextCacheEntryInfoBufferSize);
     return FALSE;
 }