diff --git a/nixos/modules/services/misc/tzupdate.nix b/nixos/modules/services/misc/tzupdate.nix
index 188ef95e185d..85b1b3647ef7 100644
--- a/nixos/modules/services/misc/tzupdate.nix
+++ b/nixos/modules/services/misc/tzupdate.nix
@@ -28,7 +28,11 @@ in {
       wants = [ "network-online.target" ];
       after = [ "network-online.target" ];
       script = ''
-        timedatectl set-timezone "$(${lib.getExe pkgs.tzupdate} --print-only)"
+        timezone="$(${lib.getExe pkgs.tzupdate} --print-only)"
+        if [[ -n "$timezone" ]]; then
+          echo "Setting timezone to '$timezone'"
+          timedatectl set-timezone "$timezone"
+        fi
       '';
 
       serviceConfig = {