diff --git a/esp8285/platformio.ini b/esp8285/platformio.ini
index befbda7..6a322a4 100644
--- a/esp8285/platformio.ini
+++ b/esp8285/platformio.ini
@@ -21,7 +21,7 @@ upload_speed = 115200
 upload_port = /dev/ttyUSB0
 monitor_port = /dev/ttyUSB0
 board_build.flash_mode = dout
-build_flags = 
+build_flags =
 	-Wno-unused-function
 	-Wno-unused-variable
 	-DLOG_DEBUG=1
diff --git a/esp8285/src/iris_kit.cpp b/esp8285/src/iris_kit.cpp
index cf7e867..8a2b6dc 100644
--- a/esp8285/src/iris_kit.cpp
+++ b/esp8285/src/iris_kit.cpp
@@ -93,14 +93,14 @@ void setup() {
     delay(SYSTEM_DELAY);
 
     Serial.clearWriteError();
-    INFOF("\n");
-    INFOF("██╗██████╗ ██╗███████╗\n");
-    INFOF("██║██╔══██╗██║██╔════╝\n");
-    INFOF("██║██████╔╝██║███████╗\n");
-    INFOF("██║██╔══██╗██║╚════██║\n");
-    INFOF("██║██║  ██║██║███████║\n");
-    INFOF("╚═╝╚═╝  ╚═╝╚═╝╚══════╝\n");
-    INFOF("== IRIS Kit [1.4.0_r1] Powered by AliyunIoT ==\n");
+    Serial.print("\n");
+    Serial.print("██╗██████╗ ██╗███████╗\n");
+    Serial.print("██║██╔══██╗██║██╔════╝\n");
+    Serial.print("██║██████╔╝██║███████╗\n");
+    Serial.print("██║██╔══██╗██║╚════██║\n");
+    Serial.print("██║██║  ██║██║███████║\n");
+    Serial.print("╚═╝╚═╝  ╚═╝╚═╝╚══════╝\n");
+    Serial.print("== IRIS Kit [1.4.0_r1] Powered by AliyunIoT ==\n");
 
     // try loading saved iriskit settings
     iriskit_settings.credential_token.clear();