diff --git a/ESPBMS.ino b/ESPBMS.ino
index 3625a73..76530a3 100644
--- a/ESPBMS.ino
+++ b/ESPBMS.ino
@@ -410,7 +410,7 @@ bool processBasicInfo(packBasicInfoStruct *output, byte *data, unsigned int data
     // Expected data len
     if (dataLen != 0x1B)
     {
-        Serial.printf("bad data len %d!",dataLen);
+        Serial.printf("bad data len %d!\r\n",dataLen);
         //return false;
     }