diff --git a/i3lock.c b/i3lock.c
index f80a3c3..f878fe0 100644
--- a/i3lock.c
+++ b/i3lock.c
@@ -755,7 +755,7 @@ int main(int argc, char *argv[]) {
         {"ignore-empty-password", no_argument, NULL, 'e'},
         {"inactivity-timeout", required_argument, NULL, 'I'},
         {"show-failed-attempts", no_argument, NULL, 'f'},
-        {"clock", no_argument, NULL, "C"},
+        {"clock", no_argument, NULL, 'C'},
         {NULL, no_argument, NULL, 0}};
 
     if ((pw = getpwuid(getuid())) == NULL)