diff --git a/src/gui/widgets/grampletpane.py b/src/gui/widgets/grampletpane.py
index 0008f3c3f..3039dc9c1 100644
--- a/src/gui/widgets/grampletpane.py
+++ b/src/gui/widgets/grampletpane.py
@@ -389,17 +389,16 @@ class GuiGramplet(object):
         Handle formatting shortcuts.
         
         """
-        if ((gtk.gdk.keyval_name(event.keyval) == 'z') and
+        if ((gtk.gdk.keyval_name(event.keyval) == 'Z') and
             (event.state & gtk.gdk.CONTROL_MASK) and 
-            (event.state & gtk.gdk.MOD2_MASK)):
-            self.undo()
-            return True
-        elif ((gtk.gdk.keyval_name(event.keyval) == 'Z') and
-              (event.state & gtk.gdk.CONTROL_MASK) and 
-              (event.state & gtk.gdk.MOD2_MASK) and
-              (event.state & gtk.gdk.SHIFT_MASK)):
+            (event.state & gtk.gdk.SHIFT_MASK)):
             self.redo()
             return True
+        elif ((gtk.gdk.keyval_name(event.keyval) == 'z') and
+              (event.state & gtk.gdk.CONTROL_MASK)):
+            self.undo()
+            return True
+
         return False
 
     def edit_title(self, widget):
diff --git a/src/gui/widgets/styledtexteditor.py b/src/gui/widgets/styledtexteditor.py
index 5afb1cc1a..db1ee3e92 100644
--- a/src/gui/widgets/styledtexteditor.py
+++ b/src/gui/widgets/styledtexteditor.py
@@ -240,17 +240,15 @@ class StyledTextEditor(gtk.TextView):
         Handle formatting shortcuts.
         
         """
-        if ((gtk.gdk.keyval_name(event.keyval) == 'z') and
+        if ((gtk.gdk.keyval_name(event.keyval) == 'Z') and
             (event.state & gtk.gdk.CONTROL_MASK) and 
-            (event.state & gtk.gdk.MOD2_MASK)):
-            self.undo()
-            return True
-        elif ((gtk.gdk.keyval_name(event.keyval) == 'Z') and
-              (event.state & gtk.gdk.CONTROL_MASK) and 
-              (event.state & gtk.gdk.MOD2_MASK) and
-              (event.state & gtk.gdk.SHIFT_MASK)):
+            (event.state & gtk.gdk.SHIFT_MASK)):
             self.redo()
             return True
+        elif ((gtk.gdk.keyval_name(event.keyval) == 'z') and
+              (event.state & gtk.gdk.CONTROL_MASK)):
+            self.undo()
+            return True
         else:
             for accel, accel_name in self.action_accels.iteritems():
                 key, mod = gtk.accelerator_parse(accel)