diff --git a/mach/m68020/as/mach0.c b/mach/m68020/as/mach0.c
index efae2afe..a3709656 100644
--- a/mach/m68020/as/mach0.c
+++ b/mach/m68020/as/mach0.c
@@ -12,7 +12,7 @@
 #define	THREE_PASS		/* branch and offset optimization */
 #define	BYTES_REVERSED		/* high order byte has lowest address */
 #define	WORDS_REVERSED		/* high order word has lowest address */
-#define	LISTING			/* enable listing facilities */
+/*#define	LISTING			/* enable listing facilities */
 #define RELOCATION		/* generate relocatable code */
 #define DEBUG 0