diff --git a/build/build-iso.sh b/build/build-iso.sh
index c4694920..34467484 100755
--- a/build/build-iso.sh
+++ b/build/build-iso.sh
@@ -17,7 +17,7 @@ fi
 #alias sudo=doas 
 
 # Set this true if you want to test ISOs in QEMU after building.
-TESTING = false
+TESTING=false
 
 TMPDIR="/tmp/zealtmp"
 TMPISODIR="$TMPDIR/iso"