diff --git a/pkg/cat/cater.go b/pkg/cat/cater.go
index 2cbcdb2..07d9de8 100644
--- a/pkg/cat/cater.go
+++ b/pkg/cat/cater.go
@@ -75,7 +75,7 @@ func (c Cater) ToMarkdown() string {
 
 	for _, name := range names {
 		// write header
-		for range strings.Count(name, "/") {
+		for range strings.Count(name, "/") + 1 {
 			sb.WriteString("#")
 		}
 		sb.WriteString(fmt.Sprintf(" %s\n\n", name))