diff --git a/src/WebAuthentication.cpp b/src/WebAuthentication.cpp
index cb261b2..ab15e4a 100644
--- a/src/WebAuthentication.cpp
+++ b/src/WebAuthentication.cpp
@@ -28,7 +28,7 @@ bool checkBasicAuthentication(const char * hash, const char * username, const ch
   if(username == NULL || password == NULL || hash == NULL)
     return false;
 
-  size_t toencodeLen = os_strlen(username)+os_strlen(password)+1;
+  size_t toencodeLen = strlen(username)+strlen(password)+1;
   size_t encodedLen = base64_encode_expected_len(toencodeLen);
   if(strlen(hash) != encodedLen)
     return false;
@@ -71,7 +71,11 @@ static bool getMD5(uint8_t * data, uint16_t len, char * output){//33 bytes or mo
 }
 
 static String genRandomMD5(){
+#ifdef ESP8266
   uint32_t r = RANDOM_REG32;
+#else
+  uint32_t r = rand();
+#endif
   char * out = (char*)malloc(33);
   if(out == NULL || !getMD5((uint8_t*)(&r), 4, out))
     return "";