diff --git a/sim/csupport/run.c b/sim/csupport/run.c
index 677f40c..e24531f 100644
--- a/sim/csupport/run.c
+++ b/sim/csupport/run.c
@@ -43,7 +43,7 @@
 	flash_areas = adesc;
 	if (setjmp(boot_jmpbuf) == 0) {
 		res = boot_go(&rsp);
-		printf("boot_go result: %d (0x%08x)\n", res, rsp.br_image_addr);
+		/* printf("boot_go result: %d (0x%08x)\n", res, rsp.br_image_addr); */
 		return res;
 	} else {
 		return -0x13579;