diff --git a/lib/irb/startup_message.rb b/lib/irb/startup_message.rb
index eec3cd2a6..c89052210 100644
--- a/lib/irb/startup_message.rb
+++ b/lib/irb/startup_message.rb
@@ -14,7 +14,6 @@ module StartupMessage
       '"cd object" to navigate into an object',
       '"show_source method" to view source code',
       '"copy expr" to copy the output to clipboard',
-      '"debug" to start integration with the "debug" gem',
       '"history -g pattern" to search history',
     ].freeze