diff --git a/patches/uefi.patch b/patches/uefi.patch
index 22f554e0..abe0b3e3 100644
--- a/patches/uefi.patch
+++ b/patches/uefi.patch
@@ -807,7 +807,7 @@ index bbedeefd262..78cdc2495ee 100644
 +-[a-f0-9][a-f0-9][a-f0-9][a-f0-9]\
 +-[a-f0-9][a-f0-9][a-f0-9][a-f0-9]\
 +-[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]02)
-+				uuid="${disk#PARTUUID=}"
++				uuid="${rootpart#PARTUUID=}"
 +				uuid="${uuid%02}00"
 +				for disk in $(find /dev -type b); do
 +					set -- $(dd if=$disk bs=1 skip=568 count=16 2>/dev/null | hexdump -v -e '8/1 "%02x "" "2/1 "%02x""-"6/1 "%02x"')