diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 091bde26b0a..90eb8c06660 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -2407,6 +2407,7 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
   keyuse.key =  cond_func->key;
   keyuse.keypart= FT_KEYPART;
   keyuse.used_tables=cond_func->key_item()->used_tables();
+  keyuse.optimize= 0;
   VOID(insert_dynamic(keyuse_array,(gptr) &keyuse));
 }