diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 0fbc3506b5fc..3bd8f0349a8a 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -35,7 +35,7 @@ subdir-ccflags-y += \
 # Extra header tests
 include $(src)/Makefile.header-test
 
-subdir-ccflags-y += -I$(src)
+subdir-ccflags-y += -I$(srctree)/$(src)
 
 # Please keep these build lists sorted!