diff --git a/arch/mips/boot/dts/img/Makefile b/arch/mips/boot/dts/img/Makefile
index 69a65f0f82d285c8cca0601ecf9650133f460a96..c178cf56f5b8bad8ca4b136a37f88980fb0ee4ba 100644
--- a/arch/mips/boot/dts/img/Makefile
+++ b/arch/mips/boot/dts/img/Makefile
@@ -1,6 +1,5 @@
 dtb-$(CONFIG_MACH_PISTACHIO)	+= pistachio_marduk.dtb
-
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_MACH_PISTACHIO)	+= pistachio_marduk.dtb.o
 
 # Force kbuild to make empty built-in.o if necessary
 obj-				+= dummy.o