diff --git a/alis-commons.sh b/alis-commons.sh
index 2bef20b9..a6940db8 100755
--- a/alis-commons.sh
+++ b/alis-commons.sh
@@ -423,7 +423,7 @@ function partition_options() {
     PARTITION_OPTIONS_BOOT="defaults"
     PARTITION_OPTIONS="defaults"
 
-    if [ BIOS_TYPE == "uefi" ]; then
+    if [ "$$BIOS_TYPE" == "uefi" ]; then
         PARTITION_OPTIONS_BOOT="$PARTITION_OPTIONS_BOOT,uid=0,gid=0,fmask=0077,dmask=0077"
     fi
     if [ "$DEVICE_TRIM" == "true" ]; then