1 files changed, 1 insertions, 1 deletions
diff --git a/lib/irb/init.rb b/lib/irb/init.rb
index 48b669f211..73ef420e60 100644
--- a/lib/irb/init.rb
+++ b/lib/irb/init.rb
@@ -108,7 +108,7 @@ module IRB # :nodoc:
     @CONF[:PROMPT_MODE] = (STDIN.tty? ? :DEFAULT : :NULL)
     @CONF[:AUTO_INDENT] = true
 
-    @CONF[:CONTEXT_MODE] = 3 # use binding in function on TOPLEVEL_BINDING
+    @CONF[:CONTEXT_MODE] = 4 # use a copy of TOPLEVEL_BINDING
     @CONF[:SINGLE_IRB] = false
 
     @CONF[:LC_MESSAGES] = Locale.new