diff --git a/main.go b/main.go
index c86041a..154aa49 100644
--- a/main.go
+++ b/main.go
@@ -1080,6 +1080,11 @@ func getSiteMap(c *gin.Context) {
 		return
 	}
 
+	if res == nil {
+		_ = c.AbortWithError(http.StatusNotFound, fmt.Errorf("sitemap does not exist"))
+		return
+	}
+
 	c.Data(http.StatusOK, "application/xml", res)
 }