diff --git a/install.uefi b/install.uefi
index fb94263..852edef 100644
--- a/install.uefi
+++ b/install.uefi
@@ -112,7 +112,7 @@ if [[ $NOCASEMATCH_UNSET ]]; then
   shopt -s nocasematch
 fi
 
-for (( i=${NUMBER_OF_PARTITIONS}; ${i} > 0 ; i=${i}-1 )) ; do
+for (( i=NUMBER_OF_PARTITIONS; i > 0 ; i=i-1 )) ; do
   OUTPUT=$(sgdisk -i "${i}" "${DRIVE}")
   PARTITION_EXISTS=$(echo "${OUTPUT}" | grep -c "GUID")
   if [[ "${PARTITION_EXISTS}" != "0" ]]; then