diff --git a/src/Heap.h b/src/Heap.h
index f89a760a00117866572ee5f32ff849c909a5eed1..cd87c173ac4c92f4fa95892eac6a1cd91dcb9c60 100644
--- a/src/Heap.h
+++ b/src/Heap.h
@@ -50,7 +50,7 @@
 
 /**
  * redefines free to use "myfree" so that heap allocation can be tracked
- * @param x the size of the item to be freed
+ * @param x the pointer to the item to be freed
  */
 #define free(x) myfree(__FILE__, __LINE__, x)