diff --git a/serialize/SerialBufferAdapter2.h b/serialize/SerialBufferAdapter2.h
index 59c79dc2..98e2d187 100644
--- a/serialize/SerialBufferAdapter2.h
+++ b/serialize/SerialBufferAdapter2.h
@@ -131,6 +131,7 @@ private:
 
 	void determineLengthInBytes(uint8_t typeSize) {
 		switch(typeSize) {
+		case(1): break;
 		case(2):
 			bufferLength *= 2; break;
 		case(4):
@@ -138,7 +139,8 @@ private:
 		case(8):
 			bufferLength *= 8; break;
 		default:
-			warning << "Invalid type size, assuming regular uint8_t." << std::endl;
+			error << "Serial Buffer Adapter 2: Invalid type size, assuming regular uint8_t." << std::endl;
+			error << "Detected type size: " << (int) typeSize << std::endl;
 		}
 	}
 };
diff --git a/serviceinterface/ServiceInterfaceBuffer.cpp b/serviceinterface/ServiceInterfaceBuffer.cpp
index d5ce6056..6798b776 100644
--- a/serviceinterface/ServiceInterfaceBuffer.cpp
+++ b/serviceinterface/ServiceInterfaceBuffer.cpp
@@ -1,6 +1,7 @@
 #include <framework/timemanager/Clock.h>
 #include <framework/serviceinterface/ServiceInterfaceBuffer.h>
 #include <cstring>
+#include <inttypes.h>
 
 // to be implemented by bsp
 extern "C" void printChar(const char*);
@@ -21,18 +22,17 @@ int ServiceInterfaceBuffer::overflow(int c) {
 	return 0;
 }
 
-// custom stdio.c library for at91sam9g20 chip which does not support unsigned long
-// So I cast (unsigned int) on loggerTimes
 int ServiceInterfaceBuffer::sync(void) {
 	if (this->isActive) {
 		Clock::TimeOfDay_t loggerTime;
 		Clock::getDateAndTime(&loggerTime);
 		char preamble[96] = { 0 };
-		sprintf(preamble, "%s: | %u:%02u:%02u.%03u | ",
-				this->log_message.c_str(), (unsigned int) loggerTime.hour,
-				(unsigned int)  loggerTime.minute,
-				(unsigned int)  loggerTime.second,
-				(unsigned int)  loggerTime.usecond /1000);
+		sprintf(preamble, "%s: | %" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ".%03" PRIu32 " | ",
+				this->log_message.c_str(),
+				loggerTime.hour,
+				loggerTime.minute,
+				loggerTime.second,
+				loggerTime.usecond /1000);
 		// Write log_message and time
 		this->putChars(preamble, preamble + sizeof(preamble));
 		// Handle output
diff --git a/timemanager/CCSDSTime.cpp b/timemanager/CCSDSTime.cpp
index a81f5596..8a123f85 100644
--- a/timemanager/CCSDSTime.cpp
+++ b/timemanager/CCSDSTime.cpp
@@ -155,8 +155,9 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 	if (length < 19) {
 		return RETURN_FAILED;
 	}
-// Newlib can't parse uint8 (there is a configure option but I still need to figure out how to make it work..)
-#ifdef NEWLIB_NO_C99_IO
+// Newlib nano can't parse uint8, see SCNu8 documentation and https://sourceware.org/newlib/README
+// Suggestion: use uint16 all the time. This should work on all systems.
+#ifdef NEWLIB_NANO_NO_C99_IO
 	uint16_t year;
 	uint16_t month;
 	uint16_t day;
@@ -181,8 +182,8 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 			&hour, &minute, &second);
 	if (count == 5) {
 		uint8_t tempDay;
-		ReturnValue_t result = CCSDSTime::convertDaysOfYear(day, year,(uint8_t *) &month,
-				&tempDay);
+		ReturnValue_t result = CCSDSTime::convertDaysOfYear(day, year,
+				reinterpret_cast<uint8_t *>(&month), reinterpret_cast<uint8_t *>(&tempDay));
 		if (result != RETURN_OK) {
 			return RETURN_FAILED;
 		}
@@ -195,6 +196,7 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
 		to->usecond = (second - floor(second)) * 1000000;
 		return RETURN_OK;
 	}
+// Warning: Compiler/Linker fails ambiguously if library does not implement C99 I/O
 #else
 	uint16_t year;
 	uint8_t month;