diff --git a/build.sh b/build.sh
index 23f9585..98cece8 100755
--- a/build.sh
+++ b/build.sh
@@ -68,6 +68,8 @@ EOF
 			log "Begin ${SUB_STAGE_DIR}/${i}-run.sh"
 			./${i}-run.sh
 			log "End ${SUB_STAGE_DIR}/${i}-run.sh"
+		elif [ -f ${i}-run.sh ]; then
+			log "Skip ${SUB_STAGE_DIR}/${i}-run.sh (not executable)"
 		fi
 		if [ -f ${i}-run-chroot.sh ]; then
 			log "Begin ${SUB_STAGE_DIR}/${i}-run-chroot.sh"