diff --git a/lib/parser/language.go b/lib/parser/language.go
index 5d8c85f..4537135 100644
--- a/lib/parser/language.go
+++ b/lib/parser/language.go
@@ -39,7 +39,7 @@ func GuessLang(epub *epubgo.Epub, origLangs []string) string {
 	if lang == "un" {
 		return normalizeLangs(origLangs)
 	}
-	return lang
+	return normalizeLangs([]string{lang})
 }
 
 func commonLang(langs []string) string {
@@ -64,7 +64,7 @@ func normalizeLangs(langs []string) string {
 		return "un"
 	}
 
-	lang := langs[0]
+	lang := strings.Split(langs[0], "-")[0]
 	if len(lang) > 3 {
 		lang = lang[0:2]
 	}