diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile
index 205e4d10e0853c7b8d20342b21111a8693701834..4f6d9e0169b2d871fb3f0e8b2fec70c3a7bc18e9 100644
--- a/tools/testing/selftests/gpio/Makefile
+++ b/tools/testing/selftests/gpio/Makefile
@@ -7,8 +7,9 @@ include ../lib.mk
 
 all: $(BINARIES)
 
-clean:
+override define CLEAN
 	$(RM) $(BINARIES)
+endef
 
 CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/
 LDLIBS += -lmount -I/usr/include/libmount