diff --git a/reactos/dll/win32/syssetup/install.c b/reactos/dll/win32/syssetup/install.c
index 6ec7285ab2d..66f981be038 100644
--- a/reactos/dll/win32/syssetup/install.c
+++ b/reactos/dll/win32/syssetup/install.c
@@ -506,7 +506,7 @@ EnableUserModePnpManager(VOID)
     }
 
     ret = StartServiceW(hService, 0, NULL);
-    if (!ret)
+    if ((!ret) && (GetLastError() != ERROR_SERVICE_ALREADY_RUNNING))
     {
         DPRINT1("Unable to start service\n");
         goto cleanup;