diff --git a/src/days/05/Day05.cpp b/src/days/05/Day05.cpp
index bb001c2..e01ccb3 100644
--- a/src/days/05/Day05.cpp
+++ b/src/days/05/Day05.cpp
@@ -45,13 +45,13 @@ Result Day05::Task2() {
 vector<Stack> Day05::parseStacks(){
 	vector<Stack> parsed;
 
-	int endIndex = splitIndex();
+	size_t endIndex = splitIndex();
 	string numberLine = input[endIndex - 1];
 	int stackCount = atoi(&numberLine.at(numberLine.size() - 2));
 	for (int i = 0; i < stackCount; i++){
 		parsed.emplace_back();
 		int index = 1 + 4 * i;
-		for (int line = endIndex - 2; line >= 0 && input[line].size() > index && input[line][index] != ' '; line--){
+		for (size_t line = endIndex - 2; input[line].size() > index && input[line][index] != ' '; line--){
 			Crate crate = input[line][index];
 			parsed[i].push_back(crate);
 		}
@@ -63,9 +63,9 @@ vector<Stack> Day05::parseStacks(){
 vector<Move> Day05::parseMoves() {
 	vector<Move> parsed;
 
-	int startIndex = splitIndex() + 1;
+	size_t startIndex = splitIndex() + 1;
 
-	for (int i = startIndex; i < input.size(); i++){
+	for (size_t i = startIndex; i < input.size(); i++){
 		string line = input[i];
 		size_t fromIndex = line.find(" from");
 		int count = stoi(line.substr(5, fromIndex - 5));
@@ -77,8 +77,8 @@ vector<Move> Day05::parseMoves() {
 	return parsed;
 }
 
-int Day05::splitIndex(){
-	auto iter = std::find_if(input.begin(), input.end(), [](const string& element){return element == "";});
+size_t Day05::splitIndex(){
+	auto iter = std::find_if(input.begin(), input.end(), [](const string& element){return element.empty();});
 	return iter - input.begin();
 }
 
diff --git a/src/days/05/Day05.h b/src/days/05/Day05.h
index a90dfa2..a9bab35 100644
--- a/src/days/05/Day05.h
+++ b/src/days/05/Day05.h
@@ -12,7 +12,7 @@ protected:
 
 	Result Task2() override;
 
-	int splitIndex();
+	size_t splitIndex();
 	vector<Stack> parseStacks();
 	vector<Move> parseMoves();
 };
\ No newline at end of file