diff --git a/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp b/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
index cbfa256c4..d42610585 100644
--- a/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
+++ b/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
@@ -865,6 +865,7 @@ bool HTTPClient::sendHeader(const char * type)
     }
 
     if(_base64Authorization.length()) {
+        _base64Authorization.replace("\n", "");
         header += F("Authorization: Basic ");
         header += _base64Authorization;
         header += "\r\n";