diff --git a/make/defs-dist.mk b/make/defs-dist.mk
index 4c663126..dc67243c 100644
--- a/make/defs-dist.mk
+++ b/make/defs-dist.mk
@@ -222,6 +222,7 @@ PKG_CONFIGDIRMODE   ?= $(CFGDIRMODE)
 #USE_DMALLOC                    ?= true
 #USE_EFENCE                     ?= true
 #USE_VALGRIND                   ?= true
+#USE_MCHECK                     ?= true
 #USE_MEMWATCH                   ?= true
 #USE_MPATROL                    ?= true
 #USE_PROFILER                   ?= true