diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 8f4f5a3..506e3f3 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -11,8 +11,8 @@
 -include .config
 
 # The filename Kbuild has precedence over Makefile
-include $(if $(wildcard $(srctree)/$(src)/Kbuild), \
-                        $(srctree)/$(src)/Kbuild, $(srctree)/$(src)/Makefile)
+kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
+include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
 
 include scripts/Kbuild.include
 include scripts/Makefile.lib
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 62351b6..8974ea5 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -13,8 +13,8 @@
 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
 
 # The filename Kbuild has precedence over Makefile
-include $(if $(wildcard $(srctree)/$(src)/Kbuild), \
-                        $(srctree)/$(src)/Kbuild, $(srctree)/$(src)/Makefile)
+kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
+include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
 
 # Figure out what we need to build from the various variables
 # ==========================================================================