diff --git a/dts/Makefile b/dts/Makefile
index d3122aa..c4ac153 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -45,4 +45,4 @@
 clean-files := dt.dtb.S
 
 # Let clean descend into dts directories
-subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/sandbox/dts ../arch/x86/dts
+subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts