diff --git a/WiFiConfig.cpp b/WiFiConfig.cpp
index 97cf0ce..b706727 100644
--- a/WiFiConfig.cpp
+++ b/WiFiConfig.cpp
@@ -170,7 +170,7 @@ String getEEPROMString(int start, int len)
 
 void setEEPROMString(int start, int len, String string)
 {
-  int si = 0;
+  unsigned int si = 0;
 
   for (int i = start; i < start + len; ++i)
   {
@@ -493,7 +493,7 @@ void WiFiConfig::_handleDisplayAP(void)
 void WiFiConfig::_plusDecode(String &s)
 {
 
-	for (int i = 0; i < s.length(); i++)
+	for (unsigned int i = 0; i < s.length(); i++)
 		s[i] = (s[i] == '+' ? ' ' : s[i]);
 }