diff --git a/client/build/sync.sh b/client/build/sync.sh
index 485a632..c59603f 100644
--- a/client/build/sync.sh
+++ b/client/build/sync.sh
@@ -2,8 +2,8 @@
 
 set -e
 
-# initial sync is immediate, cron syncs have a random delay unless $CRON_DELAY==false
-if [ $1 == "delay" ]; then
+# insert optional random delay
+if [ x$1 == x"delay" ]; then
     echo -e "\n[$(date +"%Y/%m/%d-%H:%M:%S")] Waiting for random delay..."
     sleep $(( RANDOM % SYNC_DELAY_MAX_SECONDS + 1 ))
     echo -e "[$(date +"%Y/%m/%d-%H:%M:%S")] Sync starts NOW!"