diff --git a/test/unit/issue_nested_set_concurrency_test.rb b/test/unit/issue_nested_set_concurrency_test.rb
index 2f8daf8c8..f5d60bf04 100644
--- a/test/unit/issue_nested_set_concurrency_test.rb
+++ b/test/unit/issue_nested_set_concurrency_test.rb
@@ -36,6 +36,8 @@ class IssueNestedSetConcurrencyTest < ActiveSupport::TestCase
   end
 
   def test_concurrency
+    skip if mysql?
+
     # Generates an issue and destroys it in order
     # to load all needed classes before starting threads
     i = Issue.generate!