diff --git a/apps/date.cpp b/apps/date.cpp
index e151ceac..2afe6cf0 100644
--- a/apps/date.cpp
+++ b/apps/date.cpp
@@ -10,7 +10,7 @@ int main(int argc, char** argv)
     StringView date;
 
     ArgumentParser parser;
-    parser.add_value_argument(date, 'd', "date"_sv, false);
+    parser.add_value_argument(date, 'd', "date"_sv, true);
     parser.parse(argc, argv);
 
     time_t now;