diff --git a/dlls/advapi32/service.c b/dlls/advapi32/service.c
index b85dc5e27fe..fa5e9dc1624 100644
--- a/dlls/advapi32/service.c
+++ b/dlls/advapi32/service.c
@@ -1036,7 +1036,7 @@ BOOL WINAPI ControlService( SC_HANDLE hService, DWORD dwControl,
     }
 
     ret = QueryServiceStatus(hService, lpServiceStatus);
-    if (ret)
+    if (!ret)
     {
         ERR("failed to query service status\n");
         SetLastError(ERROR_SERVICE_NOT_ACTIVE);