diff --git a/Userland/Utilities/ls.cpp b/Userland/Utilities/ls.cpp
index 4fe2289ce0..c240f6ed08 100644
--- a/Userland/Utilities/ls.cpp
+++ b/Userland/Utilities/ls.cpp
@@ -77,6 +77,7 @@ static bool is_a_tty = false;
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     TRY(Core::System::pledge("stdio rpath tty"));
+    tzset();
 
     struct winsize ws;
     int rc = ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws);