diff --git a/osal/host/MessageQueue.cpp b/osal/host/MessageQueue.cpp
index 41c55a3d..a779bdcb 100644
--- a/osal/host/MessageQueue.cpp
+++ b/osal/host/MessageQueue.cpp
@@ -5,6 +5,8 @@
 #include "../../ipc/MutexFactory.h"
 #include "../../ipc/MutexGuard.h"
 
+#include <cstring>
+
 MessageQueue::MessageQueue(size_t messageDepth, size_t maxMessageSize):
 		messageSize(maxMessageSize), messageDepth(messageDepth) {
 	queueLock = MutexFactory::instance()->createMutex();
@@ -126,8 +128,7 @@ ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
 				internalErrorReporter->queueMessageNotSent();
 			}
 		}
-		// TODO: Better returnvalue
-		return HasReturnvaluesIF::RETURN_FAILED;
+		return MessageQueueIF::DESTINATION_INVALID;
 	}
 	if(targetQueue->messageQueue.size() < targetQueue->messageDepth) {
 		MutexGuard mutexLock(targetQueue->queueLock, MutexIF::TimeoutType::WAITING, 20);
diff --git a/osal/host/MessageQueue.h b/osal/host/MessageQueue.h
index e965123d..1c9b5e33 100644
--- a/osal/host/MessageQueue.h
+++ b/osal/host/MessageQueue.h
@@ -217,15 +217,15 @@ private:
 	 * @brief	The class stores the queue id it got assigned.
 	 * 			If initialization fails, the queue id is set to zero.
 	 */
-	MessageQueueId_t mqId = 0;
+	MessageQueueId_t mqId = MessageQueueIF::NO_QUEUE;
 	size_t messageSize = 0;
 	size_t messageDepth = 0;
 
 	MutexIF* queueLock;
 
 	bool defaultDestinationSet = false;
-	MessageQueueId_t defaultDestination = 0;
-	MessageQueueId_t lastPartner = 0;
+	MessageQueueId_t defaultDestination = MessageQueueIF::NO_QUEUE;
+	MessageQueueId_t lastPartner = MessageQueueIF::NO_QUEUE;
 };
 
 #endif /* FRAMEWORK_OSAL_HOST_MESSAGEQUEUE_H_ */
diff --git a/serialize/SerializeIF.h b/serialize/SerializeIF.h
index d72218f0..dfd854e3 100644
--- a/serialize/SerializeIF.h
+++ b/serialize/SerializeIF.h
@@ -19,7 +19,10 @@
 class SerializeIF {
 public:
 	enum class Endianness : uint8_t {
-		BIG, LITTLE, MACHINE
+		BIG,
+		LITTLE,
+		MACHINE,
+		NETWORK = BIG // Added for convenience like htons on sockets
 	};
 
 	static const uint8_t INTERFACE_ID = CLASS_ID::SERIALIZE_IF;
diff --git a/timemanager/TimeStamperIF.h b/timemanager/TimeStamperIF.h
index 1c4ada60..34990500 100644
--- a/timemanager/TimeStamperIF.h
+++ b/timemanager/TimeStamperIF.h
@@ -3,6 +3,7 @@
 
 #include <FSFWConfig.h>
 #include "../returnvalues/HasReturnvaluesIF.h"
+#include <FSFWConfig.h>
 
 /**
  * A class implementing this IF provides facilities to add a time stamp to the