diff --git a/SublimeBlockCursor.py b/SublimeBlockCursor.py
index 8f52de6..069e6c2 100644
--- a/SublimeBlockCursor.py
+++ b/SublimeBlockCursor.py
@@ -3,10 +3,6 @@
 
 
 class SublimeBlockCursor(sublime_plugin.EventListener):
-    def view_is_widget(view):
-        settings = view.settings()
-        return bool(settings.get('is_widget'))
-
     def show_block_cursor(self, view):
         validRegions = []
         for s in view.sel():
@@ -19,10 +15,14 @@ def show_block_cursor(self, view):
             view.erase_regions('SublimeBlockCursorListener')
 
     def on_selection_modified(self, view):
+        if view is None:
+            return
+
         is_vintage_mode = "Vintage" not in view.settings().get('ignored_packages', [])
         command_mode = view.settings().get('command_mode')
+        view_is_widget = bool(view.settings().get('is_widget'))
 
-        if view_is_widget(view) or (is_vintage_mode and not command_mode):
+        if view_is_widget or (is_vintage_mode and not command_mode):
             view.erase_regions('SublimeBlockCursorListener')
             return