diff --git a/ampel-firmware/src/lib/IotWebConf/src/IotWebConf.h b/ampel-firmware/src/lib/IotWebConf/src/IotWebConf.h
index ae7739c5334aa3c22269e9675448b250cb41bce6..ddf708b4b1b94891e91fc8e62abcc62bf7c2a9e4 100644
--- a/ampel-firmware/src/lib/IotWebConf/src/IotWebConf.h
+++ b/ampel-firmware/src/lib/IotWebConf/src/IotWebConf.h
@@ -13,9 +13,9 @@
 #define IotWebConf_h
 
 #include <Arduino.h>
-#include <IotWebConfParameter.h>
-#include <IotWebConfSettings.h>
-#include <IotWebConfWebServerWrapper.h>
+#include "IotWebConfParameter.h"
+#include "IotWebConfSettings.h"
+#include "IotWebConfWebServerWrapper.h"
 
 #ifdef ESP8266
 # include <ESP8266WiFi.h>
diff --git a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.cpp b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.cpp
index 83aa153fdc4f29aaa1c1f969622621232abc8ec8..be9d99b96d069836394950d86bacb2d1f6485b4a 100644
--- a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.cpp
+++ b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.cpp
@@ -9,7 +9,7 @@
  * of the MIT license.  See the LICENSE file for details.
  */
 
-#include <IotWebConfParameter.h>
+#include "IotWebConfParameter.h"
 
 namespace iotwebconf
 {
diff --git a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.h b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.h
index 1f836917674f413467edc3b8e0e8dd4c3323f4bf..4ad7b9516dbe4ea37c4a4dec8cf35b3e47f989f7 100644
--- a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.h
+++ b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfParameter.h
@@ -14,8 +14,8 @@
 
 #include <Arduino.h>
 #include <functional>
-#include <IotWebConfSettings.h>
-#include <IotWebConfWebServerWrapper.h>
+#include "IotWebConfSettings.h"
+#include "IotWebConfWebServerWrapper.h"
 
 #ifdef IOTWEBCONF_ENABLE_JSON
 # include <ArduinoJson.h>
diff --git a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameter.h b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameter.h
index 9bd42e3a381d2883b9e6ae8bd5a4e13cbabc1b91..65796d506373c21eec3feab3367b44e554c5d6db 100644
--- a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameter.h
+++ b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameter.h
@@ -15,7 +15,7 @@
 
 // TODO: This file is a mess. Help wanted to organize thing!
 
-#include <IotWebConfParameter.h>
+#include "IotWebConfParameter.h"
 #include <Arduino.h>
 #include <IPAddress.h>
 #include <errno.h>
@@ -946,6 +946,6 @@ protected:
 
 } // end namespace
 
-#include <IotWebConfTParameterBuilder.h>
+#include "IotWebConfTParameterBuilder.h"
 
 #endif
diff --git a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameterBuilder.h b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameterBuilder.h
index ce546dd79f5a635942e0ad5e6345305cae0cde50..68ff77a6d764f91520e5cbb7c660c51fba2b591a 100644
--- a/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameterBuilder.h
+++ b/ampel-firmware/src/lib/IotWebConf/src/IotWebConfTParameterBuilder.h
@@ -13,7 +13,7 @@
 #ifndef IotWebConfTParameterBuilder_h
 #define IotWebConfTParameterBuilder_h
 
-#include <IotWebConfTParameter.h>
+#include "IotWebConfTParameter.h"
 
 namespace iotwebconf
 {
diff --git a/ampel-firmware/web_config.cpp b/ampel-firmware/web_config.cpp
index 744cb0d8c9f3bf399d882b108a0d2fcfd465effc..1d4672d0daa2a869efef283cc9fbe3907e3173b9 100644
--- a/ampel-firmware/web_config.cpp
+++ b/ampel-firmware/web_config.cpp
@@ -11,9 +11,9 @@
 #include "util.h"
 #include "sensor_console.h"
 
-#include <IotWebConf.h>
-#include <IotWebConfTParameter.h>
-#include <IotWebConfOptionalGroup.h>
+#include "src/lib/IotWebConf/src/IotWebConf.h"
+#include "src/lib/IotWebConf/src/IotWebConfTParameter.h"
+#include "src/lib/IotWebConf/src/IotWebConfOptionalGroup.h"
 
 //TODO: Check memory consumption. Disable DEBUG info?
 //TODO: Convert all strings to F-strings