diff --git a/src/hasp_debug.cpp b/src/hasp_debug.cpp
index 699a02fc..dace63c1 100644
--- a/src/hasp_debug.cpp
+++ b/src/hasp_debug.cpp
@@ -66,9 +66,10 @@ static void debugPrintTimestamp(int level, Print* _logOutput)
         unsigned long int milli = curTime.tv_usec / 1000;
         char buffer[24];
         // strftime(buffer, sizeof(buffer), "[%b %d %H:%M:%S", timeinfo); // Literal String
-        strftime(buffer, sizeof(buffer), "[" D_TIMESTAMP, timeinfo); // Literal String
+        strftime(buffer, sizeof(buffer), " [" D_TIMESTAMP, timeinfo); // Literal String
 
 #ifdef ARDUINO
+        _logOutput->print(xPortGetCoreID());
         _logOutput->printf(PSTR("%s.%03lu]"), buffer, milli);
 #else
         debug_print(_logOutput, PSTR("%s.%03lu]"), buffer, milli);
@@ -78,7 +79,8 @@ static void debugPrintTimestamp(int level, Print* _logOutput)
 
         uint32_t msecs = millis();
 #ifdef ARDUINO
-        _logOutput->printf(PSTR("[" D_TIME_MILLIS ".%03d]"), msecs / 1000, msecs % 1000);
+        _logOutput->print(xPortGetCoreID());
+        _logOutput->printf(PSTR(" [" D_TIME_MILLIS ".%03d]"), msecs / 1000, msecs % 1000);
 #else
         debug_print(_logOutput, PSTR("[" D_TIME_MILLIS ".%03d]"), msecs / 1000, msecs % 1000);
 #endif