diff --git a/mm/mm_heap/mm_malloc.c b/mm/mm_heap/mm_malloc.c
index 9a94910a35a..d392c2aaa1a 100644
--- a/mm/mm_heap/mm_malloc.c
+++ b/mm/mm_heap/mm_malloc.c
@@ -244,6 +244,8 @@ FAR void *mm_malloc(FAR struct mm_heap_s *heap, size_t size)
   else
     {
       mwarn("WARNING: Allocation failed, size %zu\n", alignsize);
+      mm_memdump(heap, -1);
+      DEBUGASSERT(false);
     }
 #endif