diff --git a/config/returnvalues/classIds.h b/config/returnvalues/classIds.h
index 3fe99a7d..f6427a1f 100644
--- a/config/returnvalues/classIds.h
+++ b/config/returnvalues/classIds.h
@@ -1,13 +1,8 @@
-/*
- * classIds.h
- *
- *  Created on: 16.07.2018
- *      Author: mohr
- */
-
 #ifndef CONFIG_RETURNVALUES_CLASSIDS_H_
 #define CONFIG_RETURNVALUES_CLASSIDS_H_
 
+#include <fsfw/returnvalues/FwClassIds.h>
+
 /**
  * Source IDs starts at 73 for now
  * Framework IDs for ReturnValues run from 0 to 56
diff --git a/hosted/config/FSFWConfig.h b/hosted/config/FSFWConfig.h
index df4075bd..e7c1175c 100644
--- a/hosted/config/FSFWConfig.h
+++ b/hosted/config/FSFWConfig.h
@@ -3,7 +3,7 @@
 
 //! When using the newlib nano library, C99 support for stdio facilities
 //! will not be provided. This define should be set to 1 if this is the case.
-#define FSFW_NO_C99_IO  0
+#define FSFW_NO_C99_IO  1
 
 
 #endif /* CONFIG_FSFWCONFIG_H_ */
diff --git a/hosted/config/returnvalues/classIds.h b/hosted/config/returnvalues/classIds.h
new file mode 100644
index 00000000..f6427a1f
--- /dev/null
+++ b/hosted/config/returnvalues/classIds.h
@@ -0,0 +1,19 @@
+#ifndef CONFIG_RETURNVALUES_CLASSIDS_H_
+#define CONFIG_RETURNVALUES_CLASSIDS_H_
+
+#include <fsfw/returnvalues/FwClassIds.h>
+
+/**
+ * Source IDs starts at 73 for now
+ * Framework IDs for ReturnValues run from 0 to 56
+ * and are located inside <fsfw/returnvalues/FwClassIds.h>
+ */
+namespace CLASS_ID {
+enum {
+	MISSION_CLASS_ID_START = FW_CLASS_ID_COUNT,
+	MGM_LIS3MDL
+};
+}
+
+
+#endif /* CONFIG_RETURNVALUES_CLASSIDS_H_ */