diff --git a/day1/day1.cpp b/day1/day1.cpp
index d84ef63..33d5c11 100644
--- a/day1/day1.cpp
+++ b/day1/day1.cpp
@@ -10,7 +10,7 @@ constexpr int TARGET_NUM = 2020;
  * @param filename The filename to read from
  * @return std::set<int> A set of the numbers in the input
  */
-std::set<int> read_input(const std::string &filename) {
+std::set<int> readInput(const std::string &filename) {
 	std::set<int> input;
 	std::string line;
 	std::ifstream file(filename);
@@ -53,7 +53,7 @@ int main(int argc, const char *argv[]) {
 		return 1;
 	}
 
-	std::set<int> inputs = read_input(argv[1]);
+	std::set<int> inputs = readInput(argv[1]);
 	std::cout << part1(inputs) << std::endl;
 	std::cout << part2(inputs) << std::endl;
 }
diff --git a/day2/day2.cpp b/day2/day2.cpp
index cf0f2b3..c6808da 100644
--- a/day2/day2.cpp
+++ b/day2/day2.cpp
@@ -54,7 +54,7 @@ class Policy {
 	char letter;
 };
 
-std::vector<std::string> read_input(const std::string &filename) {
+std::vector<std::string> readInput(const std::string &filename) {
 	std::vector<std::string> input;
 	std::string line;
 	std::ifstream file(filename);
@@ -138,7 +138,7 @@ int main(int argc, char *argv[]) {
 		return 1;
 	}
 
-	auto input = read_input(argv[1]);
+	auto input = readInput(argv[1]);
 	std::cout << part1(input) << std::endl;
 	std::cout << part2(input) << std::endl;
 }
diff --git a/day3/day3.cpp b/day3/day3.cpp
index e95d99a..e42d494 100644
--- a/day3/day3.cpp
+++ b/day3/day3.cpp
@@ -6,7 +6,7 @@
 
 constexpr char TREE_CHAR = '#';
 
-std::vector<std::string> read_input(const std::string &filename) {
+std::vector<std::string> readInput(const std::string &filename) {
 	std::vector<std::string> input;
 	std::string line;
 	std::ifstream file(filename);
@@ -63,7 +63,7 @@ int main(int argc, char *argv[]) {
 		return 1;
 	}
 
-	auto input = read_input(argv[1]);
+	auto input = readInput(argv[1]);
 	std::cout << part1(input) << std::endl;
 	std::cout << part2(input) << std::endl;
 }
diff --git a/day4/day4.cpp b/day4/day4.cpp
index 3b23b13..806b73d 100644
--- a/day4/day4.cpp
+++ b/day4/day4.cpp
@@ -37,7 +37,7 @@ const auto FIELD_VALIDATORS = std::map<std::string, std::function<bool(const std
 	{"cid", [](const std::string &value) { return true; }},
 };
 
-std::string read_input(const std::string &filename) {
+std::string readInput(const std::string &filename) {
 	std::vector<std::string> input;
 	std::string line;
 	std::ifstream file(filename);
@@ -195,7 +195,7 @@ int main(int argc, char *argv[]) {
 		return 1;
 	}
 
-	std::string input = read_input(argv[1]);
+	std::string input = readInput(argv[1]);
 	auto passports = makePassportMaps(input);
 	std::cout << part1(passports) << std::endl;
 	std::cout << part2(passports) << std::endl;
diff --git a/day5/day5.cpp b/day5/day5.cpp
index 1409793..b9fa36b 100644
--- a/day5/day5.cpp
+++ b/day5/day5.cpp
@@ -14,7 +14,7 @@ constexpr char BACK_CHAR = 'B';
 constexpr char RIGHT_CHAR = 'R';
 constexpr char LEFT_CHAR = 'L';
 
-std::vector<std::string> read_input(const std::string &filename) {
+std::vector<std::string> readInput(const std::string &filename) {
 	std::vector<std::string> input;
 	std::string line;
 	std::ifstream file(filename);
@@ -125,7 +125,7 @@ int main(int argc, char *argv[]) {
 		return 1;
 	}
 
-	auto input = read_input(argv[1]);
+	auto input = readInput(argv[1]);
 	std::cout << part1(input) << std::endl;
 	std::cout << part2(input) << std::endl;
 }