diff --git a/rename-subs b/rename-subs
index c9681fa..ea586ae 100644
--- a/rename-subs
+++ b/rename-subs
@@ -3,6 +3,7 @@
 # It renames the .srt files in a directory to match the .mp4 movie names (since those are the formats I usually need).
 # If the subtitles are in a subfolder, the script should still work as long as there's only one .srt file.
 # It makes the subs discoverable by virtually any video player.
+# Optionally takes a language arguments e.g. en to rename to .en.srt
 
 for f in *.mp4; do
     if [ -f "$f" ]; then
@@ -10,7 +11,9 @@ for f in *.mp4; do
         echo "Renaming the subtitle (if any) accompanying $h.mp4..."
         n=$(find . -maxdepth 2 -name "*.srt" -printf '.' | wc -m)
         if [ $n -eq 1 ] && ! [ -f "$h.srt" ]; then
-            find . -maxdepth 2 -name "*.srt" -exec mv "{}" "$h.srt" \;
+            # Check if language was given
+            [ -z $1 ] && ext="srt" || ext="$1.srt"
+            find . -maxdepth 2 -name "*.srt" -exec mv "{}" "$h.$ext" \;
             echo "Done!"
         else
             echo "Unable to find unique srt file that needs to be renamed. It might already have the proper name."