diff --git a/classify_videos.sh b/classify_videos.sh
index e1217c5..7cf247f 100755
--- a/classify_videos.sh
+++ b/classify_videos.sh
@@ -17,4 +17,4 @@ do
             done <<< "$(find . -mindepth 1 -maxdepth 1 -type f -name \*"${video_id}"\*)"
         fi
     fi
-done <<< "$(find . -mindepth 1 -maxdepth 1 -type f| grep -Eo '\[[0-9a-zA-Z\-_]{11}\]' | tr -d '[]' | sort | uniq)"
+done <<< "$(find . -mindepth 1 -maxdepth 1 -type f| grep -Eo '\[[^]]{11}' | tr -d '[]' | sort | uniq)"