diff --git a/code/espurna/api.ino b/code/espurna/api.ino
index 57f4094d..8a9a750b 100644
--- a/code/espurna/api.ino
+++ b/code/espurna/api.ino
@@ -14,7 +14,6 @@ Copyright (C) 2016-2017 by Xose Pérez <xose dot perez at gmail dot com>
 #include <vector>
 
 typedef struct {
-    char * url;
     char * key;
     api_get_callback_f getFn = NULL;
     api_put_callback_f putFn = NULL;
@@ -116,19 +115,23 @@ void _onAPIs(AsyncWebServerRequest *request) {
 
     bool asJson = _asJson(request);
 
+    char buffer[40];
+
     String output;
     if (asJson) {
         DynamicJsonBuffer jsonBuffer;
         JsonObject& root = jsonBuffer.createObject();
         for (unsigned int i=0; i < _apis.size(); i++) {
-            root[_apis[i].key] = _apis[i].url;
+            snprintf_P(buffer, sizeof(buffer), PSTR("/api/%s"), _apis[i].key);
+            root[_apis[i].key] = String(buffer);
         }
         root.printTo(output);
         request->send(200, "application/json", output);
 
     } else {
         for (unsigned int i=0; i < _apis.size(); i++) {
-            output += _apis[i].key + String(" -> ") + _apis[i].url + String("\n");
+            snprintf_P(buffer, sizeof(buffer), PSTR("/api/%s"), _apis[i].key);
+            output += _apis[i].key + String(" -> ") + String(buffer) + String("\n");
         }
         request->send(200, "text/plain", output);
     }
@@ -162,13 +165,12 @@ void _onRPC(AsyncWebServerRequest *request) {
 
 // -----------------------------------------------------------------------------
 
-void apiRegister(const char * url, const char * key, api_get_callback_f getFn, api_put_callback_f putFn) {
+void apiRegister(const char * key, api_get_callback_f getFn, api_put_callback_f putFn) {
 
     // Store it
     web_api_t api;
     char buffer[40];
-    snprintf_P(buffer, sizeof(buffer), PSTR("/api/%s"), url);
-    api.url = strdup(buffer);
+    snprintf_P(buffer, sizeof(buffer), PSTR("/api/%s"), key);
     api.key = strdup(key);
     api.getFn = getFn;
     api.putFn = putFn;
diff --git a/code/espurna/config/prototypes.h b/code/espurna/config/prototypes.h
index 0e081647..894eb850 100644
--- a/code/espurna/config/prototypes.h
+++ b/code/espurna/config/prototypes.h
@@ -18,7 +18,7 @@ AsyncWebServer * webServer();
 // -----------------------------------------------------------------------------
 typedef std::function<void(char *, size_t)> api_get_callback_f;
 typedef std::function<void(const char *)> api_put_callback_f;
-void apiRegister(const char * url, const char * key, api_get_callback_f getFn, api_put_callback_f putFn = NULL);
+void apiRegister(const char * key, api_get_callback_f getFn, api_put_callback_f putFn = NULL);
 
 // -----------------------------------------------------------------------------
 // WebSockets
diff --git a/code/espurna/light.ino b/code/espurna/light.ino
index 9b9f8a97..3200fcd2 100644
--- a/code/espurna/light.ino
+++ b/code/espurna/light.ino
@@ -724,7 +724,7 @@ void _lightAPISetup() {
     if (_light_has_color) {
 
 		// DEPRECATE
-        apiRegister(MQTT_TOPIC_COLOR, MQTT_TOPIC_COLOR,
+        apiRegister(MQTT_TOPIC_COLOR,
             [](char * buffer, size_t len) {
                 if (getSetting("useCSS", LIGHT_USE_CSS).toInt() == 1) {
                     _toRGB(buffer, len, false);
@@ -738,7 +738,7 @@ void _lightAPISetup() {
             }
         );
 
-        apiRegister(MQTT_TOPIC_COLOR_RGB, MQTT_TOPIC_COLOR_RGB,
+        apiRegister(MQTT_TOPIC_COLOR_RGB,
             [](char * buffer, size_t len) {
                 if (getSetting("useCSS", LIGHT_USE_CSS).toInt() == 1) {
                     _toRGB(buffer, len, false);
@@ -752,7 +752,7 @@ void _lightAPISetup() {
             }
         );
 
-        apiRegister(MQTT_TOPIC_COLOR_HSV, MQTT_TOPIC_COLOR_HSV,
+        apiRegister(MQTT_TOPIC_COLOR_HSV,
             [](char * buffer, size_t len) {
                 _toHSV(buffer, len);
             },
@@ -762,7 +762,7 @@ void _lightAPISetup() {
             }
         );
 
-        apiRegister(MQTT_TOPIC_BRIGHTNESS, MQTT_TOPIC_BRIGHTNESS,
+        apiRegister(MQTT_TOPIC_BRIGHTNESS,
             [](char * buffer, size_t len) {
     			snprintf_P(buffer, len, PSTR("%d"), _light_brightness);
             },
@@ -772,7 +772,7 @@ void _lightAPISetup() {
             }
         );
 
-        apiRegister(MQTT_TOPIC_KELVIN, MQTT_TOPIC_KELVIN,
+        apiRegister(MQTT_TOPIC_KELVIN,
             [](char * buffer, size_t len) {},
             [](const char * payload) {
                 _fromKelvin(atol(payload));
@@ -780,7 +780,7 @@ void _lightAPISetup() {
             }
         );
 
-        apiRegister(MQTT_TOPIC_MIRED, MQTT_TOPIC_MIRED,
+        apiRegister(MQTT_TOPIC_MIRED,
             [](char * buffer, size_t len) {},
             [](const char * payload) {
                 _fromMireds(atol(payload));
@@ -792,13 +792,10 @@ void _lightAPISetup() {
 
     for (unsigned int id=0; id<lightChannels(); id++) {
 
-        char url[15];
-        snprintf_P(url, sizeof(url), PSTR("%s/%d"), MQTT_TOPIC_CHANNEL, id);
+        char key[15];
+        snprintf_P(key, sizeof(key), PSTR("%s/%d"), MQTT_TOPIC_CHANNEL, id);
 
-        char key[10];
-        snprintf_P(key, sizeof(key), PSTR("%s%d"), MQTT_TOPIC_CHANNEL, id);
-
-        apiRegister(url, key,
+        apiRegister(key,
             [id](char * buffer, size_t len) {
 				snprintf_P(buffer, len, PSTR("%d"), lightChannel(id));
             },
diff --git a/code/espurna/relay.ino b/code/espurna/relay.ino
index 787d4f66..69c08de5 100644
--- a/code/espurna/relay.ino
+++ b/code/espurna/relay.ino
@@ -476,13 +476,10 @@ void relaySetupAPI() {
     // API entry points (protected with apikey)
     for (unsigned int relayID=0; relayID<relayCount(); relayID++) {
 
-        char url[15];
-        snprintf_P(url, sizeof(url), PSTR("%s/%d"), MQTT_TOPIC_RELAY, relayID);
+        char key[15];
+        snprintf_P(key, sizeof(key), PSTR("%s/%d"), MQTT_TOPIC_RELAY, relayID);
 
-        char key[10];
-        snprintf_P(key, sizeof(key), PSTR("%s%d"), MQTT_TOPIC_RELAY, relayID);
-
-        apiRegister(url, key,
+        apiRegister(key,
             [relayID](char * buffer, size_t len) {
 				snprintf_P(buffer, len, PSTR("%d"), relayStatus(relayID) ? 1 : 0);
             },
diff --git a/code/espurna/sensor.ino b/code/espurna/sensor.ino
index 41423b35..4d4210dd 100644
--- a/code/espurna/sensor.ino
+++ b/code/espurna/sensor.ino
@@ -161,7 +161,7 @@ void _sensorAPISetup() {
         String topic = _magnitudeTopic(magnitude.type);
         if (SENSOR_USE_INDEX || (_counts[magnitude.type] > 1)) topic = topic + "/" + String(magnitude.global);
 
-        apiRegister(topic.c_str(), topic.c_str(), [magnitude_id](char * buffer, size_t len) {
+        apiRegister(topic.c_str(), [magnitude_id](char * buffer, size_t len) {
             sensor_magnitude_t magnitude = _magnitudes[magnitude_id];
             unsigned char decimals = _magnitudeDecimals(magnitude.type);
             double value = _sensor_realtime ? magnitude.current : magnitude.filtered;