diff --git a/test/ruby/test_hash.rb b/test/ruby/test_hash.rb
index 0549886317..edf335eaa6 100644
--- a/test/ruby/test_hash.rb
+++ b/test/ruby/test_hash.rb
@@ -1745,7 +1745,7 @@ class TestHash < Test::Unit::TestCase
     assert_raise(RuntimeError){
       hrec(h, nrec){ h[:c] = 3 }
     }
-  rescue SystemStackError => e
+  rescue SystemStackError
     # ignore
   end