diff --git a/scripts/remove_ads.py b/scripts/remove_ads.py
index 8e2d687..54d08c8 100755
--- a/scripts/remove_ads.py
+++ b/scripts/remove_ads.py
@@ -51,7 +51,7 @@ def main():
     for filename in filelist:
 
         ca = ComicArchive(filename, settings.rar_exe_path)
-        if (ca.isZip() or ca.isRar()) and ca.hasMetadata(style):
+        if (ca.isZip or ca.isRar()) and ca.hasMetadata(style):
             md = ca.readMetadata(style)
             if len(md.pages) != 0:
                 for p in md.pages: