diff --git a/test/irb/test_cmd.rb b/test/irb/test_cmd.rb
index 044d852a327111..5b63e56800a33e 100644
--- a/test/irb/test_cmd.rb
+++ b/test/irb/test_cmd.rb
@@ -398,8 +398,8 @@ def test_show_source
       ])
       IRB.init_config(nil)
       workspace = IRB::WorkSpace.new(self)
-      irb = IRB::Irb.new(workspace, input)
       IRB.conf[:VERBOSE] = false
+      irb = IRB::Irb.new(workspace, input)
       IRB.conf[:MAIN_CONTEXT] = irb.context
       irb.context.return_format = "=> %s\n"
       out, err = capture_output do