diff --git a/mm/mm_heap/mm_sem.c b/mm/mm_heap/mm_sem.c
index d42040ec23..bdb233a863 100644
--- a/mm/mm_heap/mm_sem.c
+++ b/mm/mm_heap/mm_sem.c
@@ -85,7 +85,7 @@ void mm_seminitialize(FAR struct mm_heap_s *heap)
    * private data sets).
    */
 
-  nxsem_init(&heap_impl->mm_semaphore, 0, 1);
+  _SEM_INIT(&heap_impl->mm_semaphore, 0, 1);
 
   heap_impl->mm_holder      = NO_HOLDER;
   heap_impl->mm_counts_held = 0;