diff --git a/modules/system/boot/readonly-mountpoint.c b/modules/system/boot/readonly-mountpoint.c
index 03ec18d4ceba..605adfafabb0 100644
--- a/modules/system/boot/readonly-mountpoint.c
+++ b/modules/system/boot/readonly-mountpoint.c
@@ -4,7 +4,6 @@
 
 int main(int argc, char ** argv) {
 	struct statvfs stat;
-	int res;
 	if (argc != 2) {
 		fprintf(stderr, "Usage: %s PATH", argv[0]);
 		exit(2);