diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index ebe5495d44..05ff624c07 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -807,4 +807,4 @@ PHONY += dtbs
 dtbs: $(addprefix $(obj)/, $(dtb-y))
 	@:
 
-clean-files := *.dtb
+clean-files := *.dtb *_HS