diff --git a/launch.sh b/launch.sh
index 1136588..bdc5b33 100755
--- a/launch.sh
+++ b/launch.sh
@@ -5,8 +5,9 @@ rm -rf locale
 mkdir locale
 cd po
 for lang in $(ls *.po); do
-    mkdir -p ../locale/${lang::-3}/LC_MESSAGES
-    msgfmt -c -o ../locale/${lang::-3}/LC_MESSAGES/manjaro-hello.mo $lang
+    lang=${lang::-3}
+    mkdir -p ../locale/${lang//_/-}/LC_MESSAGES
+    msgfmt -c -o ../locale/${lang//_/-}/LC_MESSAGES/manjaro-hello.mo $lang.po
 done
 cd ..
 python src/manjaro_hello.py
diff --git a/src/manjaro_hello.py b/src/manjaro_hello.py
index 3e1129a..2ce0637 100644
--- a/src/manjaro_hello.py
+++ b/src/manjaro_hello.py
@@ -126,6 +126,8 @@ class ManjaroHello():
         :param locale: locale to use
         :type locale: str
         """
+        if "_" in locale:
+            locale = locale.replace("_", "-")
         try:
             tr = gettext.translation(self.app, self.locale_path, [locale], fallback=True)
             tr.install()