diff --git a/tools/gpio/Makefile b/tools/gpio/Makefile
index 359dd5d11c81..e2ac49253a0a 100644
--- a/tools/gpio/Makefile
+++ b/tools/gpio/Makefile
@@ -32,7 +32,7 @@ $(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h
 
 prepare: $(OUTPUT)include/linux/gpio.h
 
-GPIO_UTILS_IN := $(output)gpio-utils-in.o
+GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o
 $(GPIO_UTILS_IN): prepare FORCE
 	$(Q)$(MAKE) $(build)=gpio-utils