diff --git a/test/irb/test_completion.rb b/test/irb/test_completion.rb
index 4500fedb0b..8194463931 100644
--- a/test/irb/test_completion.rb
+++ b/test/irb/test_completion.rb
@@ -125,8 +125,8 @@ module TestIRB
 
       def test_complete_require_library_name_first
         # Test that library name is completed first with subdirectories
-        candidates = IRB::RegexpCompletor.new.completion_candidates("require ", "'rubygems", "", bind: binding)
-        assert_equal "'rubygems", candidates.first
+        candidates = IRB::RegexpCompletor.new.completion_candidates("require ", "'irb", "", bind: binding)
+        assert_equal "'irb", candidates.first
       end
 
       def test_complete_require_relative