diff --git a/activerecord/test/cases/adapters/mysql2/connection_test.rb b/activerecord/test/cases/adapters/mysql2/connection_test.rb
index 8d8955e5c9b66939c6fd46b15edbd88565ae0df1..b441ce3a34fd228a86ba04aac00d1a7264b38c8d 100644
--- a/activerecord/test/cases/adapters/mysql2/connection_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/connection_test.rb
@@ -68,7 +68,7 @@ def test_execute_after_disconnect
     error = assert_raise(ActiveRecord::StatementInvalid) do
       @connection.execute("SELECT 1")
     end
-    assert_match(/closed MySQL connection/, error.message)
+    assert_match(/MySQL client is not connected/, error.message)
   end
 
   def test_quote_after_disconnect
@@ -76,7 +76,7 @@ def test_quote_after_disconnect
     error = assert_raise(Mysql2::Error) do
       @connection.quote("string")
     end
-    assert_match(/closed MySQL connection/, error.message)
+    assert_match(/MySQL client is not connected/, error.message)
   end
 
   def test_active_after_disconnect