1 files changed, 1 insertions, 1 deletions

diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c
index c0534e298b51..cb3fc09645c4 100644
--- a/tools/testing/selftests/vm/gup_benchmark.c
+++ b/tools/testing/selftests/vm/gup_benchmark.c
@@ -37,7 +37,7 @@ int main(int argc, char **argv)
         char *file = "/dev/zero";
         char *p;
 
-        while ((opt = getopt(argc, argv, "m:r:n:f:tTLUSH")) != -1) {
+        while ((opt = getopt(argc, argv, "m:r:n:f:tTLUwSH")) != -1) {
                 switch (opt) {
                 case 'm':
                         size = atoi(optarg) * MB;