diff --git a/include/stellar/stellar_exdata.h b/include/stellar/stellar_exdata.h
index 605cb12..199ac56 100644
--- a/include/stellar/stellar_exdata.h
+++ b/include/stellar/stellar_exdata.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "utils.h"
 #include "stellar.h"
 
 #ifdef __cplusplus
@@ -8,6 +9,13 @@ extern "C"
 #endif
 
 typedef void stellar_exdata_free(int idx, void *ex_ptr, void *arg);
+
+
+inline static void stellar_exdata_free_default(int idx __unused, void *ex_ptr, void *arg __unused)
+{
+	if(ex_ptr)FREE(ex_ptr);
+}
+
 int stellar_exdata_new_index(struct stellar *st, const char *name, stellar_exdata_free *free_func,void *arg); 
 
 //packet exdata api
diff --git a/include/stellar/stellar_mq.h b/include/stellar/stellar_mq.h
index 9267868..7b826d5 100644
--- a/include/stellar/stellar_mq.h
+++ b/include/stellar/stellar_mq.h
@@ -1,4 +1,6 @@
 #pragma once
+
+#include "utils.h"	
 #include "stellar.h"
 
 #ifdef __cplusplus
@@ -9,6 +11,11 @@ extern "C"
 //topic api
 typedef void stellar_msg_free_cb_func(void *msg, void *msg_free_arg);
 
+inline static void stellar_msg_free_default(void *msg, void *msg_free_arg __unused)
+{
+	if(msg)FREE(msg);
+}
+
 //return topic_id
 int stellar_mq_create_topic(struct stellar *st, const char *topic_name, stellar_msg_free_cb_func *msg_free_cb, void *msg_free_arg);
 int stellar_mq_get_topic_id(struct stellar *st, const char *topic_name);