diff --git a/boottools/apt.py b/boottools/apt.py
index ddb6662..d50f6dd 100644
--- a/boottools/apt.py
+++ b/boottools/apt.py
@@ -36,7 +36,7 @@ def remove (pkgs):
     apt_cache = apt.Cache()
     for p in pkgs:
         if p in apt_cache:
-            p.mark_delete()
+            apt_cache[p].mark_delete()
     try:
         apt_cache.commit()
     except Exception as e: