diff --git a/src/oapv_tpool.c b/src/oapv_tpool.c
index d110356..8be0740 100644
--- a/src/oapv_tpool.c
+++ b/src/oapv_tpool.c
@@ -679,8 +679,3 @@ int oapv_tpool_spinlock_wait(volatile int *addr, int val)
     return temp;
 }
 
-void threadsafe_assign(volatile int *addr, int val)
-{
-    // thread safe volatile assign
-    *addr = val;
-}
diff --git a/src/oapv_tpool.h b/src/oapv_tpool.h
index 102687e..2529883 100644
--- a/src/oapv_tpool.h
+++ b/src/oapv_tpool.h
@@ -77,7 +77,6 @@ tpool_result_t oapv_tpool_deinit(oapv_tpool_t *tp);
 oapv_sync_obj_t oapv_tpool_sync_obj_create();
 tpool_result_t oapv_tpool_sync_obj_delete(oapv_sync_obj_t *sobj);
 int oapv_tpool_spinlock_wait(volatile int *addr, int val);
-void threadsafe_assign(volatile int *addr, int val);
 
 void oapv_tpool_enter_cs(oapv_sync_obj_t sobj);
 void oapv_tpool_leave_cs(oapv_sync_obj_t sobj);