diff --git a/winsup/Makefile.common b/winsup/Makefile.common
index 86ac71fd9..ef9e44f53 100644
--- a/winsup/Makefile.common
+++ b/winsup/Makefile.common
@@ -11,8 +11,8 @@
 # This makefile requires GNU make.
 
 CFLAGS_COMMON:=-Wall -Wwrite-strings # -finline-functions
-MALLOC_DEBUG:=#-DMALLOC_DEBUG -I/cygnus/src/uberbaum/winsup/cygwin/dlmalloc
-MALLOC_OBJ:=#/cygnus/src/uberbaum/winsup/cygwin/dlmalloc/malloc.o
+# MALLOC_DEBUG:=-DMALLOC_DEBUG -I/cygnus/src/uberbaum/winsup/cygwin/dlmalloc
+# MALLOC_OBJ:=/cygnus/src/uberbaum/winsup/cygwin/dlmalloc/malloc.o
 
 override srcdir:=${shell cd $(srcdir); pwd}
 ifneq (,${filter-out /%,$(srcdir)})