diff --git a/README.rst b/README.rst
index 38d2413..1c5df0f 100644
--- a/README.rst
+++ b/README.rst
@@ -100,6 +100,7 @@
         query_cache_limit: 16M
         query_cache_size: 96M
         force_encoding: utf8
+        sql_mode: "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
         database:
           name:
             encoding: 'utf8'