diff --git a/meshtastic/config.options b/meshtastic/config.options
index 4490f08..22dcc88 100644
--- a/meshtastic/config.options
+++ b/meshtastic/config.options
@@ -1,3 +1,6 @@
+# longest current is 45 chars, plan with a bit of buffer
+*DeviceConfig.tzdef max_size:65
+
 *NetworkConfig.wifi_ssid max_size:33
 *NetworkConfig.wifi_psk max_size:65
 *NetworkConfig.ntp_server max_size:33