diff --git a/activerecord/test/cases/schema_dumper_test.rb b/activerecord/test/cases/schema_dumper_test.rb
index 5da3f59a1f330c4c4fb6151e6da5093a2f817065..99e7ef6c0399d48892f07813b2ae6d28fc91aac6 100644
--- a/activerecord/test/cases/schema_dumper_test.rb
+++ b/activerecord/test/cases/schema_dumper_test.rb
@@ -14,9 +14,10 @@ def standard_dump
     @stream.string
   end
 
-  def test_magic_comment
-    skip "only test magic comments on 1.9" if RUBY_VERSION < '1.9'
-    assert_match "# encoding: #{@stream.external_encoding.name}", standard_dump
+  if "string".encoding_aware?
+    def test_magic_comment
+      assert_match "# encoding: #{@stream.external_encoding.name}", standard_dump
+    end
   end
 
   def test_schema_dump