diff --git a/uefi/Makefile b/uefi/Makefile
index 1b99b66..c6acfea 100644
--- a/uefi/Makefile
+++ b/uefi/Makefile
@@ -1,5 +1,5 @@
 # detect architecture
-MYARCH = $(shell uname -m | sed s,i[3456789]86,ia32,)
+MYARCH = $(shell uname -m | sed s,i[3456789]86,ia32, | sed s,amd,x86_,)
 ifeq ($(ARCH),)
 ARCH = $(MYARCH)
 endif