Index: generic/src/adt/btree.c
===================================================================
--- generic/src/adt/btree.c	(revision 018d957e20e03bd2a5c78e93cd9916eb0d1d222b)
+++ generic/src/adt/btree.c	(revision e1be3b6b980efbd59c66cd0b6f3c2dc4a505b824)
@@ -29,5 +29,5 @@
 /*
  * This B-tree has the following properties:
- * - it is a ballanced 2-3-4 tree (i.e. M = 4)
+ * - it is a ballanced 2-3-4 tree (i.e. BTREE_M = 4)
  * - values (i.e. pointers to values) are stored only in leaves
  * - leaves are linked in a list