diff --git a/code/espurna/debug.ino b/code/espurna/debug.ino
index d8937f70..2969d0ee 100644
--- a/code/espurna/debug.ino
+++ b/code/espurna/debug.ino
@@ -16,35 +16,43 @@ char _udp_syslog_header[40] = {0};
 #endif
 #endif
 
-void _debugSend(char * message) {
+#if DEBUG_SERIAL_SUPPORT
+    void _debugSendSerial(const char* prefix, const char* data) {
+        if (prefix && (prefix[0] != '\0')) {
+            Serial.print(prefix);
+        }
+        Serial.print(data);
 
-    size_t msg_len = strlen(message);
-    bool pause = false;
+    }
+#endif
 
-    #if DEBUG_ADD_TIMESTAMP
-        const char TIMESTAMP_FMT[] = "[%06lu] ";
-        const uint8_t TIMESTAMP_SIZE = 10;
+#if DEBUG_TELNET_SUPPORT
+    void _debugSendTelnet(const char* prefix, const char* data) {
+        if (prefix && (prefix[0] != '\0')) {
+            _telnetWrite(prefix);
+        }
+        _telnetWrite(data);
 
-        static bool add_timestamp = true;
+    }
+#endif
 
-        size_t offset = 0;
-        char buffer[TIMESTAMP_SIZE + msg_len];
+void _debugSend(const char * message) {
 
-        if (add_timestamp) {
-            snprintf(buffer, TIMESTAMP_SIZE, TIMESTAMP_FMT, millis() % 1000000);
-            offset = TIMESTAMP_SIZE - 1;
-        }
+    const size_t msg_len = strlen(message);
 
-        memcpy(buffer + offset, message, msg_len);
-        buffer[msg_len + offset] = '\0';
+    bool pause = false;
+    char timestamp[10] = {0};
 
+    #if DEBUG_ADD_TIMESTAMP
+        static bool add_timestamp = true;
+        if (add_timestamp) {
+            snprintf(timestamp, sizeof(timestamp), "[%06lu] ", millis() % 1000000);
+        }
         add_timestamp = (message[msg_len - 1] == 10) || (message[msg_len - 1] == 13);
-    #else
-        char* buffer = message;
     #endif
 
     #if DEBUG_SERIAL_SUPPORT
-        DEBUG_PORT.print(buffer);
+        _debugSendSerial(timestamp, message);
     #endif
 
     #if DEBUG_UDP_SUPPORT
@@ -64,12 +72,13 @@ void _debugSend(char * message) {
     #endif
 
     #if DEBUG_TELNET_SUPPORT
-        _telnetWrite(buffer, strlen(buffer));
+        _debugSendTelnet(timestamp, message);
         pause = true;
     #endif
 
     #if DEBUG_WEB_SUPPORT
-        wsDebugSend(buffer);
+        wsDebugSend(timestamp, message);
+        pause = true;
     #endif
 
     if (pause) optimistic_yield(100);
diff --git a/code/espurna/telnet.ino b/code/espurna/telnet.ino
index b4b53c7c..3108089f 100644
--- a/code/espurna/telnet.ino
+++ b/code/espurna/telnet.ino
@@ -45,14 +45,14 @@ void _telnetDisconnect(unsigned char clientId) {
     DEBUG_MSG_P(PSTR("[TELNET] Client #%d disconnected\n"), clientId);
 }
 
-bool _telnetWrite(unsigned char clientId, void *data, size_t len) {
+bool _telnetWrite(unsigned char clientId, const char *data, size_t len) {
     if (_telnetClients[clientId] && _telnetClients[clientId]->connected()) {
-        return (_telnetClients[clientId]->write((const char*) data, len) > 0);
+        return (_telnetClients[clientId]->write(data, len) > 0);
     }
     return false;
 }
 
-unsigned char _telnetWrite(void *data, size_t len) {
+unsigned char _telnetWrite(const char *data, size_t len) {
     unsigned char count = 0;
     for (unsigned char i = 0; i < TELNET_MAX_CLIENTS; i++) {
         // Do not send broadcast messages to unauthenticated clients
@@ -65,8 +65,12 @@ unsigned char _telnetWrite(void *data, size_t len) {
     return count;
 }
 
+unsigned char _telnetWrite(const char *data) {
+    return _telnetWrite(data, strlen(data));
+}
+
 bool _telnetWrite(unsigned char clientId, const char * message) {
-    return _telnetWrite(clientId, (void *) message, strlen(message));
+    return _telnetWrite(clientId, message, strlen(message));
 }
 
 void _telnetData(unsigned char clientId, void *data, size_t len) {
diff --git a/code/espurna/ws.ino b/code/espurna/ws.ino
index 4ed0a899..89a9b20c 100644
--- a/code/espurna/ws.ino
+++ b/code/espurna/ws.ino
@@ -75,13 +75,18 @@ bool _wsAuth(AsyncWebSocketClient * client) {
 
 #if DEBUG_WEB_SUPPORT
 
-bool wsDebugSend(const char* message) {
+bool wsDebugSend(const char* prefix, const char* message) {
     if (!wsConnected()) return false;
     if (getFreeHeap() < (strlen(message) * 3)) return false;
 
     DynamicJsonBuffer jsonBuffer;
     JsonObject &root = jsonBuffer.createObject();
-    root.set("weblog", message);
+    JsonObject &weblog = root.createNestedObject("weblog");
+
+    weblog.set("message", message);
+    if (prefix && (prefix[0] != '\0')) {
+        weblog.set("prefix", prefix);
+    }
 
     wsSend(root);
 
diff --git a/code/html/custom.js b/code/html/custom.js
index 810be461..fd194603 100644
--- a/code/html/custom.js
+++ b/code/html/custom.js
@@ -1478,7 +1478,12 @@ function processData(data) {
         // Web log
         if ("weblog" === key) {
             websock.send("{}");
-            $("#weblog").append(new Text(value));
+
+            if (value.prefix) {
+                $("#weblog").append(new Text(value.prefix));
+            }
+            $("#weblog").append(new Text(value.message));
+
             $("#weblog").scrollTop($("#weblog")[0].scrollHeight - $("#weblog").height());
             return;
         }