diff --git a/arch/um/Makefile b/arch/um/Makefile
index 3aded4e..649aebc 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -25,9 +25,6 @@
 SHARED_HEADERS	:= $(ARCH_DIR)/include/shared
 ARCH_INCLUDE	:= -I$(srctree)/$(SHARED_HEADERS)
 ARCH_INCLUDE	+= -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared
-ifneq ($(KBUILD_SRC),)
-ARCH_INCLUDE	+= -I$(SHARED_HEADERS)
-endif
 KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)
 
 # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
@@ -87,7 +84,6 @@
 KBUILD_KCONFIG := arch/um/Kconfig.$(HEADER_ARCH)
 
 archprepare: include/generated/user_constants.h
-archprepare: $(SHARED_HEADERS)/kern_constants.h
 
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
@@ -118,8 +114,7 @@
 
 # When cleaning we don't include .config, so we don't include
 # TT or skas makefiles and don't clean skas_ptregs.h.
-CLEAN_FILES += linux x.i gmon.out \
-	$(SHARED_HEADERS)/kern_constants.h
+CLEAN_FILES += linux x.i gmon.out
 
 archclean:
 	@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
@@ -146,8 +141,4 @@
 include/generated/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
 	$(call filechk,gen-asm-offsets)
 
-$(SHARED_HEADERS)/kern_constants.h:
-	$(Q)mkdir -p $(dir $@)
-	$(Q)echo '#include <generated/asm-offsets.h>' >$@
-
 export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH