diff --git a/Makefile b/Makefile
index 833bcd2a8..1f725dfaf 100644
--- a/Makefile
+++ b/Makefile
@@ -162,7 +162,7 @@ $(MMSONAME): $(MOK_OBJS) $(LIBS)
 	$(LD) -o $@ $(LDFLAGS) $^ $(EFI_LIBS) lib/lib.a
 
 gnu-efi/$(ARCH_GNUEFI)/gnuefi/libgnuefi.a gnu-efi/$(ARCH_GNUEFI)/lib/libefi.a: CFLAGS+=-DGNU_EFI_USE_EXTERNAL_STDARG
-gnu-efi/$(ARCH_GNUEFI)/gnuefi/libgnuefi.a gnu-efi/$(ARCH_GNUEFI)/lib/libefi.a:
+gnu-efi/$(ARCH_GNUEFI)/gnuefi/libgnuefi.a gnu-efi/$(ARCH_GNUEFI)/lib/libefi.a &:
 	mkdir -p gnu-efi/lib gnu-efi/gnuefi
 	$(MAKE) -C gnu-efi \
 		COMPILER="$(COMPILER)" \