1 files changed, 2 insertions, 2 deletions
diff --git a/gl/lib/heap.h b/gl/lib/heap.h
index 0ea516a79..b61adf619 100644
--- a/gl/lib/heap.h
+++ b/gl/lib/heap.h
@@ -25,10 +25,10 @@ struct heap
   void **array;     /* array[0] is not used */
   size_t capacity;  /* Array size */
   size_t count;     /* Used as index to last element. Also is num of items. */
-  int (*compare)(const void *, const void *);
+  int (*compare) (void const *, void const *);
 };
 
-struct heap *heap_alloc (int (*)(const void *, const void *), size_t);
+struct heap *heap_alloc (int (*) (void const *, void const *), size_t);
 void heap_free (struct heap *);
 int heap_insert (struct heap *heap, void *item);
 void *heap_remove_top (struct heap *heap);