diff --git a/Makefile b/Makefile
index f114152..68877d7 100644
--- a/Makefile
+++ b/Makefile
@@ -12,11 +12,7 @@ LABEL = $(PRODUCT) $(VERSION)
 NASM = nasm
 NASM_ARGS = -s -Ilib -DPRODUCT=$(PRODUCT) -DVERSION=$(VERSION)
 
-KVM = $(shell test -w /dev/kvm && echo 1)
-
-ifdef KVM
-QEMU_ARGS += --enable-kvm
-endif
+QEMU_ARGS += $(shell test -w /dev/kvm && echo --enable-kvm)
 
 ifdef DEBUG
 ROMS += dprintf.rom