diff --git a/linux/boardtest/UartTestClass.cpp b/linux/boardtest/UartTestClass.cpp
index c2619699..28d92c40 100644
--- a/linux/boardtest/UartTestClass.cpp
+++ b/linux/boardtest/UartTestClass.cpp
@@ -23,7 +23,7 @@
 UartTestClass::UartTestClass(object_id_t objectId, ScexUartReader* reader)
 : TestTask(objectId), reader(reader) {
 	mode = TestModes::SCEX;
-	scexMode = ScexModes::READER_TASK;
+	scexMode = ScexModes::SIMPLE;
 	currCmd = scex::ScexCmds::FRAM;
 	if (scexMode == ScexModes::SIMPLE) {
 		auto encodingBuf = new std::array<uint8_t, 4096>;
diff --git a/linux/devices/ScexUartReader.cpp b/linux/devices/ScexUartReader.cpp
index 15201dd1..657fb829 100644
--- a/linux/devices/ScexUartReader.cpp
+++ b/linux/devices/ScexUartReader.cpp
@@ -170,7 +170,7 @@ void ScexUartReader::foundDlePacketHandler(const DleParser::Context &ctx) {
 void ScexUartReader::handleFoundDlePacket(uint8_t *packet, size_t len) {
   // TODO: insert data into IPC ring buffer here
   sif::info << "Detected DLE encoded packet with decoded size " << len << std::endl;
-  //MutexGuard mg(lock);
+  MutexGuard mg(lock);
   ReturnValue_t result = ipcQueue.insert(len);
   if(result != RETURN_OK){
 	  sif::warning<< "IPCQueue error" << std::endl;
@@ -184,7 +184,7 @@ void ScexUartReader::handleFoundDlePacket(uint8_t *packet, size_t len) {
 
 ReturnValue_t ScexUartReader::readReceivedMessage(CookieIF *cookie, uint8_t **buffer,
                                                   size_t *size) {
-  //MutexGuard mg(lock);
+  MutexGuard mg(lock);
   if (ipcQueue.empty()) {
     *size = 0;
     return RETURN_OK;