diff --git a/payloads/nvramcui/payload.sh b/payloads/nvramcui/payload.sh
index 57ed38b3a6..3d171e6949 100755
--- a/payloads/nvramcui/payload.sh
+++ b/payloads/nvramcui/payload.sh
@@ -2,6 +2,6 @@
 #
 # This is a trivial payload compile & find script for abuild
 #
-DIR=`dirname $0`
-lpgcc -o $DIR/nvramcui.elf $DIR/nvramcui.c 2>&1 >/dev/null || exit 1
+DIR=$(dirname "$0")
+lpgcc -o "$DIR/nvramcui.elf" "$DIR/nvramcui.c" >/dev/null 2>&1 || exit 1
 echo "$DIR/nvramcui.elf"