diff --git a/test/irb/test_completion.rb b/test/irb/test_completion.rb
index f00eda0058..d94c471996 100644
--- a/test/irb/test_completion.rb
+++ b/test/irb/test_completion.rb
@@ -75,7 +75,7 @@ module TestIRB
 
     def test_complete_require_library_name_first
       candidates = IRB::InputCompletor::CompletionProc.("'csv", "require ", "")
-      assert_equal candidates.first, "'csv"
+      assert_equal "'csv", candidates.first
     end
 
     def test_complete_require_relative