diff --git a/mkosi.images/build/mkosi.sync b/mkosi.images/build/mkosi.sync
index 198e1bc1475..a545d498670 100755
--- a/mkosi.images/build/mkosi.sync
+++ b/mkosi.images/build/mkosi.sync
@@ -3,7 +3,7 @@
 set -e
 set -o nounset
 
-if ((${NO_SYNC:-0})); then
+if ((${NO_SYNC:-0})) || ((${NO_BUILD:-0})); then
     exit 0
 fi