1 files changed, 4 insertions, 0 deletions
diff --git a/sql/handler.cc b/sql/handler.cc
index 3f0411d6198..93442b4f852 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -1982,6 +1982,10 @@ int handler::check_old_types()
       {
         return HA_ADMIN_NEEDS_ALTER;
       }
+      if ((*field)->type() == MYSQL_TYPE_VAR_STRING)
+      {
+        return HA_ADMIN_NEEDS_ALTER;
+      }
     }
   }
   return 0;