diff --git a/mm/tlsf/mm_tlsf.c b/mm/tlsf/mm_tlsf.c
index a366e3033b2..6bcb432d5da 100644
--- a/mm/tlsf/mm_tlsf.c
+++ b/mm/tlsf/mm_tlsf.c
@@ -574,7 +574,7 @@ void mm_checkcorruption(FAR struct mm_heap_s *heap)
         }
       else
         {
-          mm_takesemaphore(heap);
+          mm_takesemaphore(impl);
         }
 
       /* Check tlsf control block in the first pass */
@@ -596,7 +596,7 @@ void mm_checkcorruption(FAR struct mm_heap_s *heap)
         }
       else
         {
-          mm_givesemaphore(heap);
+          mm_givesemaphore(impl);
         }
     }
 #undef region