diff --git a/inc/Message.hpp b/inc/Message.hpp
index bbc9d76ebabc4196dddd470c98e95735a1f04426..b55bf7c354519fd68561f7be7b5578e010101569 100644
--- a/inc/Message.hpp
+++ b/inc/Message.hpp
@@ -272,7 +272,7 @@ public:
 	template<const size_t SIZE>
 	void appendOctetString(const String<SIZE> & string) {
 		// Make sure that the string is large enough to count
-		assertI(string.size() <= (std::numeric_limits<uint16_t>::max)(),
+		ASSERT_INTERNAL(string.size() <= (std::numeric_limits<uint16_t>::max)(),
 			ErrorHandler::StringTooLarge);
 
 		appendUint16(string.size());
@@ -466,9 +466,9 @@ public:
 
 template<const size_t SIZE>
 inline void Message::appendString(const String<SIZE> & string) {
-	assertI(dataSize + string.size() < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
+	ASSERT_INTERNAL(dataSize + string.size() < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
 	// TODO: Do we need to keep this check? How does etl::string handle it?
-	assertI(string.size() < string.capacity(), ErrorHandler::StringTooLarge);
+	ASSERT_INTERNAL(string.size() < string.capacity(), ErrorHandler::StringTooLarge);
 
 	memcpy(data + dataSize, string.data(), string.size());
 
diff --git a/inc/macros.hpp b/inc/macros.hpp
index db57516f3ac7802c4200d4088163cff1b8d76dc8..f5205be237b3768b4791b0e7f47ff256b968970d 100644
--- a/inc/macros.hpp
+++ b/inc/macros.hpp
@@ -6,13 +6,13 @@
  *
  * @todo Actually hold program execution or throw an exception here
  */
-#define assertI(cond, error) (ErrorHandler::assertInternal((cond), (error)))
+#define ASSERT_INTERNAL(cond, error) (ErrorHandler::assertInternal((cond), (error)))
 
 /**
  * A wrapper for ErrorHandler::assertRequest() that uses `this` as the Message object.
  *
  * Only to be used within the Message class.
  */
-#define assertR(cond, error) (ErrorHandler::assertRequest((cond), *this, (error)))
+#define ASSERT_REQUEST(cond, error) (ErrorHandler::assertRequest((cond), *this, (error)))
 
 #endif //ECSS_SERVICES_MACROS_HPP
diff --git a/src/Helpers/TimeAndDate.cpp b/src/Helpers/TimeAndDate.cpp
index d0a5fc7d937744663c501f3c54b7329cbe1ffa29..38280ecb745925f3ce989ad3547b9379bb888f67 100644
--- a/src/Helpers/TimeAndDate.cpp
+++ b/src/Helpers/TimeAndDate.cpp
@@ -14,12 +14,12 @@ TimeAndDate::TimeAndDate() {
 TimeAndDate::TimeAndDate(uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute,
                          uint8_t second) {
 	// check if the parameters make sense
-	assertI(2019 <= year, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(1 <= month && month <= 12, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(1 <= day && day <= 31, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= hour && hour <= 24, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= minute && minute <= 60, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= second && second <= 60, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(2019 <= year, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(1 <= month && month <= 12, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(1 <= day && day <= 31, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(0 <= hour && hour <= 24, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(0 <= minute && minute <= 60, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(0 <= second && second <= 60, ErrorHandler::InternalErrorType::InvalidDate);
 
 	this->year = year;
 	this->month = month;
diff --git a/src/Helpers/TimeHelper.cpp b/src/Helpers/TimeHelper.cpp
index 93aa1cae95a557edad4a7e17dabbbecfe846cbfb..4b6885dc9b842ade6bb33fd0c5a09270b4df11e4 100644
--- a/src/Helpers/TimeHelper.cpp
+++ b/src/Helpers/TimeHelper.cpp
@@ -13,16 +13,16 @@ bool TimeHelper::IsLeapYear(uint16_t year) {
 uint32_t TimeHelper::utcToSeconds(TimeAndDate &TimeInfo) {
 	// the date, that \p TimeInfo represents, should be greater than or equal to 1/1/2019 and the
 	// date should be valid according to Gregorian calendar
-	assertI(TimeInfo.year >= 2019, ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(1 <= TimeInfo.month && TimeInfo.month <= 12,
+	ASSERT_INTERNAL(TimeInfo.year >= 2019, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(1 <= TimeInfo.month && TimeInfo.month <= 12,
 	        ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(1 <= TimeInfo.day && TimeInfo.day <= 31,
+	ASSERT_INTERNAL(1 <= TimeInfo.day && TimeInfo.day <= 31,
 	        ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= TimeInfo.hour && TimeInfo.hour <= 24,
+	ASSERT_INTERNAL(0 <= TimeInfo.hour && TimeInfo.hour <= 24,
 	        ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= TimeInfo.minute && TimeInfo.minute <= 60,
+	ASSERT_INTERNAL(0 <= TimeInfo.minute && TimeInfo.minute <= 60,
 	        ErrorHandler::InternalErrorType::InvalidDate);
-	assertI(0 <= TimeInfo.second && TimeInfo.second <= 60,
+	ASSERT_INTERNAL(0 <= TimeInfo.second && TimeInfo.second <= 60,
 	        ErrorHandler::InternalErrorType::InvalidDate);
 
 	uint32_t secs = 1546300800; // elapsed seconds from Unix epoch until 1/1/2019 00:00:00 (UTC)
@@ -44,7 +44,7 @@ uint32_t TimeHelper::utcToSeconds(TimeAndDate &TimeInfo) {
 
 struct TimeAndDate TimeHelper::secondsToUTC(uint32_t seconds) {
 	// elapsed seconds should be between dates, that are after 1/1/2019 and Unix epoch
-	assertI(seconds >= 1546300800, ErrorHandler::InternalErrorType::InvalidDate);
+	ASSERT_INTERNAL(seconds >= 1546300800, ErrorHandler::InternalErrorType::InvalidDate);
 
 	seconds -= 1546300800; // elapsed seconds from Unix epoch until 1/1/2019 00:00:00 (UTC)
 	TimeAndDate TimeInfo;
diff --git a/src/Message.cpp b/src/Message.cpp
index 6c4f1fb613f6e0a46f767f1a436e91e67cc34f2d..72a343033a9f9278e253ed9abe8cc45e58d63e21 100644
--- a/src/Message.cpp
+++ b/src/Message.cpp
@@ -10,10 +10,10 @@ Message::Message(uint8_t serviceType, uint8_t messageType, Message::PacketType p
 
 void Message::appendBits(uint8_t numBits, uint16_t data) {
 	// TODO: Add assertion that data does not contain 1s outside of numBits bits
-	assertI(numBits <= 16, ErrorHandler::TooManyBitsAppend);
+	ASSERT_INTERNAL(numBits <= 16, ErrorHandler::TooManyBitsAppend);
 
 	while (numBits > 0) { // For every sequence of 8 bits...
-		assertI(dataSize < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
+		ASSERT_INTERNAL(dataSize < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
 
 		if (currentBit + numBits >= 8) {
 			// Will have to shift the bits and insert the next ones later
@@ -37,16 +37,16 @@ void Message::appendBits(uint8_t numBits, uint16_t data) {
 }
 
 void Message::appendByte(uint8_t value) {
-	assertI(dataSize < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
-	assertI(currentBit == 0, ErrorHandler::ByteBetweenBits);
+	ASSERT_INTERNAL(dataSize < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
+	ASSERT_INTERNAL(currentBit == 0, ErrorHandler::ByteBetweenBits);
 
 	data[dataSize] = value;
 	dataSize++;
 }
 
 void Message::appendHalfword(uint16_t value) {
-	assertI(dataSize + 2 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
-	assertI(currentBit == 0, ErrorHandler::ByteBetweenBits);
+	ASSERT_INTERNAL(dataSize + 2 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
+	ASSERT_INTERNAL(currentBit == 0, ErrorHandler::ByteBetweenBits);
 
 	data[dataSize] = static_cast<uint8_t>((value >> 8) & 0xFF);
 	data[dataSize + 1] = static_cast<uint8_t>(value & 0xFF);
@@ -55,8 +55,8 @@ void Message::appendHalfword(uint16_t value) {
 }
 
 void Message::appendWord(uint32_t value) {
-	assertI(dataSize + 4 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
-	assertI(currentBit == 0, ErrorHandler::ByteBetweenBits);
+	ASSERT_INTERNAL(dataSize + 4 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooLarge);
+	ASSERT_INTERNAL(currentBit == 0, ErrorHandler::ByteBetweenBits);
 
 	data[dataSize] = static_cast<uint8_t>((value >> 24) & 0xFF);
 	data[dataSize + 1] = static_cast<uint8_t>((value >> 16) & 0xFF);
@@ -67,12 +67,12 @@ void Message::appendWord(uint32_t value) {
 }
 
 uint16_t Message::readBits(uint8_t numBits) {
-	assertR(numBits <= 16, ErrorHandler::TooManyBitsRead);
+	ASSERT_REQUEST(numBits <= 16, ErrorHandler::TooManyBitsRead);
 
 	uint16_t value = 0x0;
 
 	while (numBits > 0) {
-		assertR(readPosition < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+		ASSERT_REQUEST(readPosition < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
 
 		if (currentBit + numBits >= 8) {
 			auto bitsToAddNow = static_cast<uint8_t>(8 - currentBit);
@@ -94,7 +94,7 @@ uint16_t Message::readBits(uint8_t numBits) {
 }
 
 uint8_t Message::readByte() {
-	assertR(readPosition < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+	ASSERT_REQUEST(readPosition < ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
 
 	uint8_t value = data[readPosition];
 	readPosition++;
@@ -103,7 +103,7 @@ uint8_t Message::readByte() {
 }
 
 uint16_t Message::readHalfword() {
-	assertR(readPosition + 2 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+	ASSERT_REQUEST(readPosition + 2 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
 
 	uint16_t value = (data[readPosition] << 8) | data[readPosition + 1];
 	readPosition += 2;
@@ -112,7 +112,7 @@ uint16_t Message::readHalfword() {
 }
 
 uint32_t Message::readWord() {
-	assertR(readPosition + 4 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+	ASSERT_REQUEST(readPosition + 4 <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
 
 	uint32_t value = (data[readPosition] << 24) | (data[readPosition + 1] << 16) |
 	                 (data[readPosition + 2] << 8) | data[readPosition + 3];
@@ -122,8 +122,8 @@ uint32_t Message::readWord() {
 }
 
 void Message::readString(char *string, uint8_t size) {
-	assertR(readPosition + size <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
-	assertR(size < ECSS_MAX_STRING_SIZE, ErrorHandler::StringTooShort);
+	ASSERT_REQUEST(readPosition + size <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+	ASSERT_REQUEST(size < ECSS_MAX_STRING_SIZE, ErrorHandler::StringTooShort);
 
 	memcpy(string, data + readPosition, size);
 	string[size] = '\0'; // todo: Use that for now to avoid problems. Later to be removed
@@ -132,8 +132,8 @@ void Message::readString(char *string, uint8_t size) {
 }
 
 void Message::readString(uint8_t *string, uint16_t size) {
-	assertR(readPosition + size <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
-	assertR(size < ECSS_MAX_STRING_SIZE, ErrorHandler::StringTooShort);
+	ASSERT_REQUEST(readPosition + size <= ECSS_MAX_MESSAGE_SIZE, ErrorHandler::MessageTooShort);
+	ASSERT_REQUEST(size < ECSS_MAX_STRING_SIZE, ErrorHandler::StringTooShort);
 
 	memcpy(string, data + readPosition, size);
 
diff --git a/src/MessageParser.cpp b/src/MessageParser.cpp
index 8e18900b8818b9eb0e04669534c898c423786026..af4988a1a302b2da35eed9d2cbe45e6b1508b706 100644
--- a/src/MessageParser.cpp
+++ b/src/MessageParser.cpp
@@ -23,7 +23,7 @@ void MessageParser::execute(Message &message) {
 }
 
 Message MessageParser::parse(uint8_t *data, uint32_t length) {
-	assertI(length >= 6, ErrorHandler::UnacceptablePacket);
+	ASSERT_INTERNAL(length >= 6, ErrorHandler::UnacceptablePacket);
 
 	uint16_t packetHeaderIdentification = (data[0] << 8) | data[1];
 	uint16_t packetSequenceControl = (data[2] << 8) | data[3];
@@ -37,10 +37,10 @@ Message MessageParser::parse(uint8_t *data, uint32_t length) {
 	auto sequenceFlags = static_cast<uint8_t>(packetSequenceControl >> 14);
 
 	// Returning an internal error, since the Message is not available yet
-	assertI(versionNumber == 0, ErrorHandler::UnacceptablePacket);
-	assertI(secondaryHeaderFlag == 1, ErrorHandler::UnacceptablePacket);
-	assertI(sequenceFlags == 0x3, ErrorHandler::UnacceptablePacket);
-	assertI(packetDataLength == length - 6, ErrorHandler::UnacceptablePacket);
+	ASSERT_INTERNAL(versionNumber == 0, ErrorHandler::UnacceptablePacket);
+	ASSERT_INTERNAL(secondaryHeaderFlag == 1, ErrorHandler::UnacceptablePacket);
+	ASSERT_INTERNAL(sequenceFlags == 0x3, ErrorHandler::UnacceptablePacket);
+	ASSERT_INTERNAL(packetDataLength == length - 6, ErrorHandler::UnacceptablePacket);
 
 	Message message(0, 0, packetType, APID);