diff --git a/removeads.py b/removeads.py
index 9a7f3af..eff4265 100755
--- a/removeads.py
+++ b/removeads.py
@@ -28,7 +28,7 @@ def checkRequiredTools():
     logger = logging.getLogger(__name__)
     allOptionalTools = True
     paths = {}
-    required = ['ffmpeg', 'ffprobe', 'mkvmerge']
+    required = ['ffmpeg', 'ffprobe', 'mkvmerge', 'mkvinfo']
     optional = ['mkvextract', 'vobsubocr','tesseract']
     for tool in required:
         path = which(tool)