diff --git a/terminatorlib/prefs_profile.py b/terminatorlib/prefs_profile.py
index ff56e8ff..67dc2507 100644
--- a/terminatorlib/prefs_profile.py
+++ b/terminatorlib/prefs_profile.py
@@ -324,7 +324,11 @@ class ProfileEditor:
       value = self.term.conf.keybindings[row[0]]
       if isinstance (value, tuple):
         value = value[0]
-      if (row[2], row[3]) != self.tkbobj._parsebinding(value):
+      keyval = 0
+      mask = 0
+      if value is not None:
+        (keyval, mask) = self.tkbobj._parsebinding(value)
+      if (row[2], row[3]) != (keyval, mask):
         changed_keybindings.append ((row[0], accel))
         dbg("%s changed from %s to %s" % (row[0], self.term.conf.keybindings[row[0]], accel))
 
@@ -350,12 +354,12 @@ class ProfileEditor:
 
     for binding in Defaults['keybindings']:
       value = self.term.conf.keybindings[binding]
-      if (value.__class__.__name__ != 'str'):
-        if isinstance (value, tuple):
-          value = value[0]
-        else:
-          continue
-      (keyval, mask) = self.tkbobj._parsebinding (value)
+      keyval = 0
+      mask = 0
+      if isinstance (value, tuple):
+        value = value[0]
+      if value is not None:
+        (keyval, mask) = self.tkbobj._parsebinding (value)
       self.liststore.append ([binding, self.source_get_keyname (binding), keyval, mask, True])
       dbg("Appended row: %s, %s, %s" % (binding, keyval, mask))