diff --git a/tools/testing/selftests/mount/Makefile b/tools/testing/selftests/mount/Makefile
index a5b367f032ba094c5fc818ea3072230c3db9a564..95580a97326e166ce2cd9f267055bbc2cdbc2355 100644
--- a/tools/testing/selftests/mount/Makefile
+++ b/tools/testing/selftests/mount/Makefile
@@ -1,9 +1,10 @@
 # Makefile for mount selftests.
-
+CFLAGS = -Wall \
+         -O2
 all: unprivileged-remount-test
 
 unprivileged-remount-test: unprivileged-remount-test.c
-	gcc -Wall -O2 unprivileged-remount-test.c -o unprivileged-remount-test
+	$(CC) $(CFLAGS) unprivileged-remount-test.c -o unprivileged-remount-test
 
 include ../lib.mk