diff --git a/linux/devices/ploc/PlocSupvUartMan.cpp b/linux/devices/ploc/PlocSupvUartMan.cpp
index 047bef59..8b341c56 100644
--- a/linux/devices/ploc/PlocSupvUartMan.cpp
+++ b/linux/devices/ploc/PlocSupvUartMan.cpp
@@ -289,6 +289,9 @@ ReturnValue_t PlocSupvUartManager::initiateUpdateContinuation() {
 
 void PlocSupvUartManager::stop() {
   MutexGuard mg(lock);
+  if(state == InternalState::SLEEPING or state == InternalState::GO_TO_SLEEP) {
+	  return;
+  }
   state = InternalState::GO_TO_SLEEP;
 }
 
@@ -297,6 +300,7 @@ void PlocSupvUartManager::start() {
   if (state != InternalState::SLEEPING and state != InternalState::GO_TO_SLEEP) {
     return;
   }
+  state = InternalState::DEFAULT;
   semaphore->release();
 }