diff --git a/server/cmd/multica/cmd_auth.go b/server/cmd/multica/cmd_auth.go
index 52f869943..b02f94618 100644
--- a/server/cmd/multica/cmd_auth.go
+++ b/server/cmd/multica/cmd_auth.go
@@ -79,7 +79,7 @@ func openBrowser(url string) error {
 		args = []string{url}
 	case "windows":
 		cmd = "cmd"
-		args = []string{"/c", "start", url}
+		args = []string{"/c", "start", "", url}
 	default:
 		return fmt.Errorf("unsupported platform: %s", runtime.GOOS)
 	}