diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 93d0818fa816..a777e57dbf89 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -33,6 +33,7 @@ ifneq ($(CONFIG_GPROF),y)
 ARCH_CFLAGS += -DUM_FASTCALL
 endif
 
+SYS_UTIL_DIR	:= $(ARCH_DIR)/sys-i386/util
 SYS_HEADERS	:= $(SYS_DIR)/sc.h $(SYS_DIR)/thread.h
 
 prepare: $(SYS_HEADERS)