diff --git a/test/t/rangeerror.rb b/test/t/rangeerror.rb
index 57afdc4bd..2a15ce225 100644
--- a/test/t/rangeerror.rb
+++ b/test/t/rangeerror.rb
@@ -2,10 +2,9 @@
 # RangeError ISO Test
 
 assert('RangeError', '15.2.26') do
-  RangeError.class == Class
+  assert_equal RangeError.class, Class
 end
 
 assert('RangeError superclass', '15.2.26.2') do
-  RangeError.superclass == StandardError
+  assert_equal RangeError.superclass, StandardError
 end
-