diff --git a/SourceFiles/Caesar.cpp b/SourceFiles/Caesar.cpp
index bde50f0..7f181ab 100644
--- a/SourceFiles/Caesar.cpp
+++ b/SourceFiles/Caesar.cpp
@@ -78,7 +78,7 @@ std::string Caesar::getOutputString() const{
  * @return The encoded message (outputString)
  */
 std::string Caesar::encode(){
-	char temp;	//A temperary holder for the current working character
+	unsigned char temp;	//A temperary holder for the current working character
 	for(unsigned int cnt = 0;cnt < inputString.size();++cnt){
 		temp = inputString.at(cnt);
 		//If it is a upper case letter shift it and wrap if necessary
@@ -130,7 +130,7 @@ std::string Caesar::encode(int shiftAmount, std::string input){
  * @return The decoded message (outputString)
  */
 std::string Caesar::decode(){
-	char temp;
+	unsigned char temp;
 	for(unsigned int cnt = 0;cnt < inputString.size();++cnt){
 		temp = inputString.at(cnt);
 		//If it is an upper case letter shift it and wrap if necessary