1 files changed, 4 insertions, 2 deletions
diff --git a/test/irb/test_debug_cmd.rb b/test/irb/test_debug_cmd.rb
index d669c174e6..53d40f7297 100644
--- a/test/irb/test_debug_cmd.rb
+++ b/test/irb/test_debug_cmd.rb
@@ -346,9 +346,11 @@ module TestIRB
     end
 
     def test_show_cmds_display_different_content_when_debugger_is_enabled
+      write_rc <<~RUBY
+        IRB.conf[:USE_PAGER] = false
+      RUBY
+
       write_ruby <<~'ruby'
-        # disable pager
-        STDIN.singleton_class.define_method(:tty?) { false }
         binding.irb
       ruby