2 files changed, 4 insertions, 4 deletions
diff --git a/ao.h b/ao.h
index 5574f30f..39ad9587 100644
--- a/ao.h
+++ b/ao.h
@@ -305,10 +305,10 @@ ao_dma_isr(void) interrupt 8;
  */
 
 void
-ao_mutex_get(__xdata uint8_t *ao_mutex);
+ao_mutex_get(__xdata uint8_t *ao_mutex) __reentrant;
 
 void
-ao_mutex_put(__xdata uint8_t *ao_mutex);
+ao_mutex_put(__xdata uint8_t *ao_mutex) __reentrant;
 
 /*
  * ao_ee.c
diff --git a/ao_mutex.c b/ao_mutex.c
index 12c67960..8212a515 100644
--- a/ao_mutex.c
+++ b/ao_mutex.c
@@ -18,7 +18,7 @@
 #include "ao.h"
 
 void
-ao_mutex_get(__xdata uint8_t *mutex)
+ao_mutex_get(__xdata uint8_t *mutex) __reentrant
 {
 	if (*mutex == ao_cur_task->task_id)
 		ao_panic(AO_PANIC_MUTEX);
@@ -30,7 +30,7 @@ ao_mutex_get(__xdata uint8_t *mutex)
 }
 
 void
-ao_mutex_put(__xdata uint8_t *mutex)
+ao_mutex_put(__xdata uint8_t *mutex) __reentrant
 {
 	if (*mutex != ao_cur_task->task_id)
 		ao_panic(AO_PANIC_MUTEX);