1 files changed, 4 insertions, 4 deletions
diff --git a/ext/tk/lib/multi-tk.rb b/ext/tk/lib/multi-tk.rb
index ef4868fdef..cfe4887c4e 100644
--- a/ext/tk/lib/multi-tk.rb
+++ b/ext/tk/lib/multi-tk.rb
@@ -1568,8 +1568,8 @@ class << MultiTkIp
     __getip.deleted?
   end
 
-  def null_namespace?
-    __getip.null_namespace?
+  def invalid_namespace?
+    __getip.invalid_namespace?
   end
 
   def abort(msg = nil)
@@ -1894,8 +1894,8 @@ class MultiTkIp
     @interp.deleted?
   end
 
-  def null_namespace?
-    @interp.null_namespace?
+  def invalid_namespace?
+    @interp.invalid_namespace?
   end
 
   def abort(msg = nil)