diff --git a/linux/devices/ploc/PlocSupvUartMan.cpp b/linux/devices/ploc/PlocSupvUartMan.cpp
index f7d15317..da9d4b3d 100644
--- a/linux/devices/ploc/PlocSupvUartMan.cpp
+++ b/linux/devices/ploc/PlocSupvUartMan.cpp
@@ -34,6 +34,7 @@ PlocSupvUartManager::PlocSupvUartManager(object_id_t objectId)
       decodedRingBuf(1200 * MAX_STORED_DECODED_PACKETS, true),
       ipcRingBuf(1200 * MAX_STORED_DECODED_PACKETS, true) {
   resetSpParams();
+  spParams.maxSize = cmdBuf.size();
   semaphore = SemaphoreFactory::instance()->createBinarySemaphore();
   semaphore->acquire();
   lock = MutexFactory::instance()->createMutex();
diff --git a/tmtc b/tmtc
index f730ff41..066adee1 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit f730ff4180b02f68122f853800a6247a92ac722e
+Subproject commit 066adee13a980f0a297ab401a10abc157a7d921d