diff --git a/ampel-firmware/util.cpp b/ampel-firmware/util.cpp
index e4860337141ca4d3bcd9c6c673552760d0fc7d9e..8a593666ae0b4fa10fd9568ad29447a8680c0812 100644
--- a/ampel-firmware/util.cpp
+++ b/ampel-firmware/util.cpp
@@ -53,6 +53,7 @@ namespace ntp {
     Serial.println(time);
     if (connected_at_least_once) {
       Serial.println(F("NTP update already happened. Not changing anything."));
+      return;
     }
     Serial.print(F("Setting UNIX time to : "));
     Serial.println(unix_seconds);