diff --git a/sys/cam/scsi/scsi_ch.c b/sys/cam/scsi/scsi_ch.c
index c969391b323..8e069db6e04 100644
--- a/sys/cam/scsi/scsi_ch.c
+++ b/sys/cam/scsi/scsi_ch.c
@@ -651,6 +651,7 @@ chdone(struct cam_periph *periph, union ccb *done_ccb)
 		} else {
 			int error;
 
+			announce_buf[0] = '\0';
 			error = cherror(done_ccb, CAM_RETRY_SELTO,
 					SF_RETRY_UA | SF_NO_PRINT);
 			/*