diff --git a/defaultenv/bin/update b/defaultenv/bin/update
index 43d3097..7c37c36 100644
--- a/defaultenv/bin/update
+++ b/defaultenv/bin/update
@@ -64,7 +64,9 @@
 	exit 1
 fi
 
-. /env/bin/_update
+. /env/bin/_update || exit 1
 if [ x${check} = xy ]; then
 	crc32 -f $image -F $part
+else
+	true
 fi