diff --git a/lua_config.c b/lua_config.c
index 312cc04..9a44301 100644
--- a/lua_config.c
+++ b/lua_config.c
@@ -59,6 +59,7 @@ 
     apr_status_t rv;
     ap_lua_mapped_handler_spec *handler =
         apr_palloc(cfg->pool, sizeof(ap_lua_mapped_handler_spec));
+    memset(handler, 0, sizeof(ap_lua_mapped_handler_spec));
     handler->uri_pattern = NULL;
     handler->function_name = NULL;