diff --git a/examples/server_example5/server_example5.c b/examples/server_example5/server_example5.c
index 21f5207a..1d6d90ee 100644
--- a/examples/server_example5/server_example5.c
+++ b/examples/server_example5/server_example5.c
@@ -22,7 +22,7 @@ void sigint_handler(int signalId)
 }
 
 static MmsDataAccessError
-writeAccessHandler (DataAttribute* dataAttribute, MmsValue* value, ClientConnection connection)
+writeAccessHandler (DataAttribute* dataAttribute, MmsValue* value, ClientConnection connection, void* parameter)
 {
     if (dataAttribute == IEDMODEL_Inverter_ZINV1_OutVarSet_setMag_f) {
 
@@ -54,7 +54,7 @@ int main(int argc, char** argv) {
 	/* Instruct the server that we will be informed if a clients writes to a
 	 * certain variables we are interested in.
 	 */
-	IedServer_handleWriteAccess(iedServer, IEDMODEL_Inverter_ZINV1_OutVarSet_setMag_f, writeAccessHandler);
+	IedServer_handleWriteAccess(iedServer, IEDMODEL_Inverter_ZINV1_OutVarSet_setMag_f, writeAccessHandler, NULL);
 
 	if (!IedServer_isRunning(iedServer)) {
 		printf("Starting server failed! Exit.\n");
diff --git a/src/iec61850/server/model/model.c b/src/iec61850/server/model/model.c
index d48888c6..6e752faa 100644
--- a/src/iec61850/server/model/model.c
+++ b/src/iec61850/server/model/model.c
@@ -418,7 +418,7 @@ LogicalDevice_getChildByMmsVariableName(LogicalDevice* logicalDevice, const char
 		fcString[1] = separator[2];
 		fcString[2] = 0;
 
-		char* strpos = mmsVariableName;
+		const char* strpos = mmsVariableName;
 
 		int targetPos = 0;