diff --git a/sysbench/scripting/script_lua.c b/sysbench/scripting/script_lua.c
index 0bfe20d..e8231bc 100644
--- a/sysbench/scripting/script_lua.c
+++ b/sysbench/scripting/script_lua.c
@@ -961,6 +961,8 @@ int sb_lua_db_close(lua_State *L)
   
   luaL_unref(L, LUA_REGISTRYINDEX, stmt->param_ref);
   luaL_unref(L, LUA_REGISTRYINDEX, stmt->result_ref);
+
+  db_close(stmt->ptr);
   
   return 0;
 }