diff --git a/ampel-firmware/ntp.cpp b/ampel-firmware/ntp.cpp
index 79d429f6c21f15e8ed47e1323c3350c6f54d7cff..468a00bff3915e75f2a09ba63c4c5c3aa04b75fb 100644
--- a/ampel-firmware/ntp.cpp
+++ b/ampel-firmware/ntp.cpp
@@ -2,7 +2,7 @@
 #include "sensor_console.h"
 #include "config.h"
 #include <WiFiUdp.h> // required for NTP
-#include "src/lib/NTPClient-master/NTPClient.h" // NTP
+#include "src/lib/NTPClient/NTPClient.h" // NTP
 
 namespace config {
   const char *ntp_server = NTP_SERVER;
diff --git a/ampel-firmware/src/lib/NTPClient-master/.travis.yml b/ampel-firmware/src/lib/NTPClient/.travis.yml
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/.travis.yml
rename to ampel-firmware/src/lib/NTPClient/.travis.yml
diff --git a/ampel-firmware/src/lib/NTPClient-master/CHANGELOG b/ampel-firmware/src/lib/NTPClient/CHANGELOG
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/CHANGELOG
rename to ampel-firmware/src/lib/NTPClient/CHANGELOG
diff --git a/ampel-firmware/src/lib/NTPClient-master/NTPClient.cpp b/ampel-firmware/src/lib/NTPClient/NTPClient.cpp
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/NTPClient.cpp
rename to ampel-firmware/src/lib/NTPClient/NTPClient.cpp
diff --git a/ampel-firmware/src/lib/NTPClient-master/NTPClient.h b/ampel-firmware/src/lib/NTPClient/NTPClient.h
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/NTPClient.h
rename to ampel-firmware/src/lib/NTPClient/NTPClient.h
diff --git a/ampel-firmware/src/lib/NTPClient-master/README.md b/ampel-firmware/src/lib/NTPClient/README.md
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/README.md
rename to ampel-firmware/src/lib/NTPClient/README.md
diff --git a/ampel-firmware/src/lib/NTPClient-master/keywords.txt b/ampel-firmware/src/lib/NTPClient/keywords.txt
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/keywords.txt
rename to ampel-firmware/src/lib/NTPClient/keywords.txt
diff --git a/ampel-firmware/src/lib/NTPClient-master/library.json b/ampel-firmware/src/lib/NTPClient/library.json
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/library.json
rename to ampel-firmware/src/lib/NTPClient/library.json
diff --git a/ampel-firmware/src/lib/NTPClient-master/library.properties b/ampel-firmware/src/lib/NTPClient/library.properties
similarity index 100%
rename from ampel-firmware/src/lib/NTPClient-master/library.properties
rename to ampel-firmware/src/lib/NTPClient/library.properties