diff --git a/releng/releng_build_isojigdo b/releng/releng_build_isojigdo
index b9da40c3..5a2a540d 100755
--- a/releng/releng_build_isojigdo
+++ b/releng/releng_build_isojigdo
@@ -47,9 +47,9 @@ elif [ "${3}" ]; then
  XOR="${1}"
  DIR="${2}"
  IMG="${3}"
- if [ "{4}" ]; then
+ if [ "${4}" ]; then
   ISOLINUX_BIN="${4}"
-  if [ "{5}" ]; then BOOT_CAT="${5}"; fi
+  if [ "${5}" ]; then BOOT_CAT="${5}"; fi
   if [ "${4}" == "-clean" -o "${5}" == "-clean" -o "${6}" == "-clean" ]; then CLEAN=1; fi
  fi
 # the rest