diff --git a/cmd/gmnhg/main.go b/cmd/gmnhg/main.go
index 8a5d82f..0f51589 100644
--- a/cmd/gmnhg/main.go
+++ b/cmd/gmnhg/main.go
@@ -198,7 +198,7 @@ func main() {
 		if err != nil {
 			return err
 		}
-		if n := info.Name(); info.IsDir() || !strings.HasSuffix(n, ".md") || n == "_index.md" {
+		if n := info.Name(); info.IsDir() || !strings.HasSuffix(n, ".md") || n == "_index.md" || n == indexMdFilename {
 			return nil
 		}
 		fileContent, err := ioutil.ReadFile(path)