diff --git a/linkcheck/containers.py b/linkcheck/containers.py
index 96731ac3..6ca6967d 100644
--- a/linkcheck/containers.py
+++ b/linkcheck/containers.py
@@ -210,8 +210,8 @@ class LFUCache (dict):
             # sorting function for items
             keyfunc = lambda x: x[1][0]
             values = sorted(items, key=keyfunc)
-            for key, value in values[0:trim]:
-                del self[key]
+            for item in values[0:trim]:
+                del self[item[0]]
 
     def __getitem__ (self, key):
         """Update key usage and return value."""
diff --git a/linkcheck/gui/settings.py b/linkcheck/gui/settings.py
index 6372f261..0709b975 100644
--- a/linkcheck/gui/settings.py
+++ b/linkcheck/gui/settings.py
@@ -17,7 +17,6 @@
 """Read and store QSettings for this application."""
 
 from PyQt4 import QtCore
-from .validator import check_regex
 
 
 def save_point (qpoint):