diff --git a/BOOTIA32.EFI b/BOOTIA32.EFI
index b9603508..11565a7b 100755
Binary files a/BOOTIA32.EFI and b/BOOTIA32.EFI differ
diff --git a/BOOTX64.EFI b/BOOTX64.EFI
index 62017479..ea4ac11e 100755
Binary files a/BOOTX64.EFI and b/BOOTX64.EFI differ
diff --git a/LICENSE.md b/LICENSE.md
index 68a53fa6..f971aed2 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-Copyright 2019, 2020, 2021 mintsuki and contributors.
+Copyright 2019, 2020, 2021, 2022 mintsuki and contributors.
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
diff --git a/Makefile b/Makefile
index 0f789d75..0443ba1a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,14 @@
-CC = cc
+CC ?= cc
 
-PREFIX = /usr/local
-DESTDIR =
+PREFIX ?= /usr/local
+DESTDIR ?=
 
-CFLAGS = -O2 -pipe -Wall -Wextra
-
-.PHONY: all install clean
+CFLAGS ?= -O2 -pipe -Wall -Wextra
 
+.PHONY: all
 all: limine-install
 
+.PHONY: install
 install: all
 	install -d '$(DESTDIR)$(PREFIX)/bin'
 	install -s limine-install '$(DESTDIR)$(PREFIX)/bin/'
@@ -21,6 +21,7 @@ install: all
 	install -m 644 BOOTX64.EFI '$(DESTDIR)$(PREFIX)/share/limine/'
 	install -m 644 BOOTIA32.EFI '$(DESTDIR)$(PREFIX)/share/limine/'
 
+.PHONY: clean
 clean:
 	rm -f limine-install limine-install.exe
 
diff --git a/limine-cd.bin b/limine-cd.bin
index d5fe3149..28d41c4d 100644
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diff --git a/limine-eltorito-efi.bin b/limine-eltorito-efi.bin
index abc50b08..b6e784d4 100644
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diff --git a/limine-hdd.bin b/limine-hdd.bin
index 4ab5d7ad..3846ea36 100644
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diff --git a/limine-install-linux-x86_32 b/limine-install-linux-x86_32
index d4063bcd..8c03617f 100755
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diff --git a/limine-install-linux-x86_64 b/limine-install-linux-x86_64
index 896504a5..fa4eff7d 100755
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diff --git a/limine-install-win32.exe b/limine-install-win32.exe
index 68716f00..34e1bd17 100755
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diff --git a/limine-pxe.bin b/limine-pxe.bin
index 4a2614af..6e0dc5fc 100644
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diff --git a/limine.sys b/limine.sys
index 83db78c0..581bec02 100755
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