1 files changed, 2 insertions, 2 deletions
diff --git a/rts/sm/HeapAlloc.h b/rts/sm/HeapAlloc.h
index 58aae1119d..e05bd41f87 100644
--- a/rts/sm/HeapAlloc.h
+++ b/rts/sm/HeapAlloc.h
@@ -210,9 +210,9 @@ StgBool HEAP_ALLOCED_GC(const void *p)
     } else {
         // putting the rest out of line turned out to be a slight
         // performance improvement:
-        ACQUIRE_SPIN_LOCK(&gc_alloc_block_sync);
+        ACQUIRE_SM_LOCK;
         b = HEAP_ALLOCED_miss(mblock,p);
-        RELEASE_SPIN_LOCK(&gc_alloc_block_sync);
+        RELEASE_SM_LOCK;
         return b;
     }
 }