diff --git a/serviceinterface/ServiceInterfacePrinter.cpp b/serviceinterface/ServiceInterfacePrinter.cpp
index fff6753b..f3d34bb0 100644
--- a/serviceinterface/ServiceInterfacePrinter.cpp
+++ b/serviceinterface/ServiceInterfacePrinter.cpp
@@ -6,7 +6,7 @@
 #include <cstdarg>
 #include <cstdint>
 
-static fsfw::PrintLevel printLevel = fsfw::PrintLevel::DEBUG_LEVEL;
+static sif::PrintLevel printLevel = sif::PrintLevel::DEBUG_LEVEL;
 #if defined(WIN32) && FSFW_COLORED_OUTPUT == 1
 static bool consoleInitialized = false;
 #endif /* defined(WIN32) && FSFW_COLORED_OUTPUT == 1 */
@@ -15,7 +15,7 @@ static bool addCrAtEnd = false;
 #if FSFW_DISABLE_PRINTOUT == 0
 uint8_t printBuffer[fsfwconfig::FSFW_PRINT_BUFFER_SIZE];
 
-void fsfwPrint(fsfw::PrintLevel printType, const char* fmt, va_list arg) {
+void fsfwPrint(sif::PrintLevel printType, const char* fmt, va_list arg) {
 
 #if defined(WIN32) && FSFW_COLORED_OUTPUT == 1
 	if(not consoleInitialized) {
@@ -32,38 +32,38 @@ void fsfwPrint(fsfw::PrintLevel printType, const char* fmt, va_list arg) {
     char* bufferPosition = reinterpret_cast<char*>(printBuffer);
 
     /* Check logger level */
-    if(printType == fsfw::PrintLevel::NONE or printType > printLevel) {
+    if(printType == sif::PrintLevel::NONE or printType > printLevel) {
         return;
     }
 
     /* Log message to terminal */
 
 #if FSFW_COLORED_OUTPUT == 1
-    if(printType == fsfw::PrintLevel::INFO_LEVEL) {
-    	len += sprintf(bufferPosition, fsfw::ANSI_COLOR_GREEN);
+    if(printType == sif::PrintLevel::INFO_LEVEL) {
+    	len += sprintf(bufferPosition, sif::ANSI_COLOR_GREEN);
     }
-    else if(printType == fsfw::PrintLevel::DEBUG_LEVEL) {
-    	len += sprintf(bufferPosition, fsfw::ANSI_COLOR_MAGENTA);
+    else if(printType == sif::PrintLevel::DEBUG_LEVEL) {
+    	len += sprintf(bufferPosition, sif::ANSI_COLOR_MAGENTA);
     }
-    else if(printType == fsfw::PrintLevel::WARNING_LEVEL) {
-    	len += sprintf(bufferPosition, fsfw::ANSI_COLOR_YELLOW);
+    else if(printType == sif::PrintLevel::WARNING_LEVEL) {
+    	len += sprintf(bufferPosition, sif::ANSI_COLOR_YELLOW);
     }
-    else if(printType == fsfw::PrintLevel::ERROR_LEVEL) {
-    	len += sprintf(bufferPosition, fsfw::ANSI_COLOR_RED);
+    else if(printType == sif::PrintLevel::ERROR_LEVEL) {
+    	len += sprintf(bufferPosition, sif::ANSI_COLOR_RED);
     }
 #endif
 
-   if (printType == fsfw::PrintLevel::INFO_LEVEL) {
+   if (printType == sif::PrintLevel::INFO_LEVEL) {
        len += sprintf(bufferPosition + len, "INFO: ");
    }
-   if(printType == fsfw::PrintLevel::DEBUG_LEVEL) {
+   if(printType == sif::PrintLevel::DEBUG_LEVEL) {
 	   len += sprintf(bufferPosition + len, "DEBUG: ");
    }
-   if(printType == fsfw::PrintLevel::WARNING_LEVEL) {
+   if(printType == sif::PrintLevel::WARNING_LEVEL) {
 	   len += sprintf(bufferPosition + len, "WARNING: ");
    }
 
-   if(printType == fsfw::PrintLevel::ERROR_LEVEL) {
+   if(printType == sif::PrintLevel::ERROR_LEVEL) {
 	   len += sprintf(bufferPosition + len, "ERROR: ");
    }
 
@@ -88,51 +88,51 @@ void fsfwPrint(fsfw::PrintLevel printType, const char* fmt, va_list arg) {
 }
 
 
-void fsfw::printInfo(const char *fmt, ...) {
+void sif::printInfo(const char *fmt, ...) {
     va_list args;
     va_start(args, fmt);
-    fsfwPrint(fsfw::PrintLevel::INFO_LEVEL, fmt, args);
+    fsfwPrint(sif::PrintLevel::INFO_LEVEL, fmt, args);
     va_end(args);
 }
 
-void fsfw::printWarning(const char *fmt, ...) {
+void sif::printWarning(const char *fmt, ...) {
     va_list args;
     va_start(args, fmt);
-    fsfwPrint(fsfw::PrintLevel::WARNING_LEVEL, fmt, args);
+    fsfwPrint(sif::PrintLevel::WARNING_LEVEL, fmt, args);
     va_end(args);
 }
 
-void fsfw::printDebug(const char *fmt, ...) {
+void sif::printDebug(const char *fmt, ...) {
     va_list args;
     va_start(args, fmt);
-    fsfwPrint(fsfw::PrintLevel::DEBUG_LEVEL, fmt, args);
+    fsfwPrint(sif::PrintLevel::DEBUG_LEVEL, fmt, args);
     va_end(args);
 }
 
-void fsfw::setToAddCrAtEnd(bool addCrAtEnd_) {
+void sif::setToAddCrAtEnd(bool addCrAtEnd_) {
 	addCrAtEnd = addCrAtEnd_;
 }
 
-void fsfw::printError(const char *fmt, ...) {
+void sif::printError(const char *fmt, ...) {
     va_list args;
     va_start(args, fmt);
-    fsfwPrint(fsfw::PrintLevel::ERROR_LEVEL, fmt, args);
+    fsfwPrint(sif::PrintLevel::ERROR_LEVEL, fmt, args);
     va_end(args);
 }
 
 #else
 
-void fsfw::printInfo(const char *fmt, ...) {}
-void fsfw::printWarning(const char *fmt, ...) {}
-void fsfw::printDebug(const char *fmt, ...) {}
-void fsfw::printError(const char *fmt, ...) {}
+void sif::printInfo(const char *fmt, ...) {}
+void sif::printWarning(const char *fmt, ...) {}
+void sif::printDebug(const char *fmt, ...) {}
+void sif::printError(const char *fmt, ...) {}
 
 #endif /* FSFW_DISABLE_PRINTOUT == 0 */
 
-void fsfw::setPrintLevel(PrintLevel printLevel_) {
+void sif::setPrintLevel(PrintLevel printLevel_) {
 	printLevel = printLevel_;
 }
 
-fsfw::PrintLevel fsfw::getPrintLevel() {
+sif::PrintLevel sif::getPrintLevel() {
 	return printLevel;
 }
diff --git a/serviceinterface/ServiceInterfacePrinter.h b/serviceinterface/ServiceInterfacePrinter.h
index f49ccbb7..fbdccdd1 100644
--- a/serviceinterface/ServiceInterfacePrinter.h
+++ b/serviceinterface/ServiceInterfacePrinter.h
@@ -2,7 +2,7 @@
 #include <cstdio>
 #endif
 
-namespace fsfw {
+namespace sif {
 
 enum PrintLevel {
 	NONE = 0,
diff --git a/serviceinterface/serviceInterfaceDefintions.h b/serviceinterface/serviceInterfaceDefintions.h
index de445907..eb36a84b 100644
--- a/serviceinterface/serviceInterfaceDefintions.h
+++ b/serviceinterface/serviceInterfaceDefintions.h
@@ -1,7 +1,7 @@
 #ifndef FSFW_SERVICEINTERFACE_SERVICEINTERFACEDEFINTIONS_H_
 #define FSFW_SERVICEINTERFACE_SERVICEINTERFACEDEFINTIONS_H_
 
-namespace fsfw {
+namespace sif {
 
 enum class OutputTypes {
 	OUT_INFO,