diff --git a/rss-xml.go b/rss-xml.go
index 342ed83..56d335b 100644
--- a/rss-xml.go
+++ b/rss-xml.go
@@ -36,7 +36,7 @@ func generateRSS() error {
 
 		epBaseUrl := baseURL + "/audio/" + filepath.Base(ep.File)
 
-		strip, found := strings.CutSuffix(epBaseUrl, ".mp3")
+		strip, found := strings.CutSuffix(filepath.Base(ep.File), ".mp3")
 		if !found {
 			log.Println("Seems the file is not mp3??????")
 		}