diff --git a/litecross/Makefile b/litecross/Makefile
index 371affb..46584fd 100644
--- a/litecross/Makefile
+++ b/litecross/Makefile
@@ -206,7 +206,7 @@ ifneq ($(LINUX_SRCDIR),)
 TARGET_ARCH = $(firstword $(subst -, ,$(TARGET)))
 TARGET_ARCH_MANGLED = $(patsubst i%86,x86,$(patsubst aarch64%,arm64%,$(TARGET_ARCH)))
 LINUX_ARCH_LIST = $(sort $(notdir $(wildcard $(LINUX_SRCDIR)/arch/*)))
-LINUX_ARCH = $(firstword $(foreach a,$(LINUX_ARCH_LIST),$(findstring $(a),$(TARGET_ARCH_MANGLED))))
+LINUX_ARCH = $(lastword $(foreach a,$(LINUX_ARCH_LIST),$(if $(filter $(a)%,$(TARGET_ARCH_MANGLED)),$(a))))
 ifneq ($(LINUX_ARCH),)
 all: kernel-headers
 install: install-kernel-headers