diff --git a/host/esp-t-sim7000g/src/main.cpp b/host/esp-t-sim7000g/src/main.cpp
index 67e087cdeb83fb79bb4782a759fbac55967a7390..06a9655e012ebe594581a7dd01f48a43408711a5 100644
--- a/host/esp-t-sim7000g/src/main.cpp
+++ b/host/esp-t-sim7000g/src/main.cpp
@@ -18,7 +18,7 @@ const char *ntpServer = "pool.ntp.org";
 const long gmtOffset_sec = 0;
 const int daylightOffset_sec = 0;
 
-SemaphoreHandle_t xBinarySemaphore;
+SemaphoreHandle_t xMutex;
 
 TaskHandle_t Task1;
 
@@ -89,9 +89,9 @@ void on_data_recv(const uint8_t *mac, const uint8_t *incomingData, int len)
 	                  + measurementType + "=" + value + " " + timestamp;
 	Serial.println(lineData);
 
-	xSemaphoreTake(xBinarySemaphore, portMAX_DELAY);
+	xSemaphoreTake(xMutex, portMAX_DELAY);
 	queue.push(lineData);
-	xSemaphoreGive(xBinarySemaphore);
+	xSemaphoreGive(xMutex);
 }
 
 [[noreturn]] void Task1code(void *parameter)
@@ -197,7 +197,7 @@ void setup()
 		Serial.println(str);
 	}
 
-	xBinarySemaphore = xSemaphoreCreateBinary();
+	xMutex = xSemaphoreCreateMutex();
 
 	Serial.println("\nWait...");
 
@@ -364,10 +364,10 @@ void loop()
 				return;
 			}
 
-			xSemaphoreTake(xBinarySemaphore, portMAX_DELAY);
+			xSemaphoreTake(xMutex, portMAX_DELAY);
 			String lineData = queue.front();
 			queue.pop();
-			xSemaphoreGive(xBinarySemaphore);
+			xSemaphoreGive(xMutex);
 
 			//"sensorName":"DRS26","timestamp":1666872216,"protocol":"I2C","value":0,"channel":0,"measurementType":"CIRCUMFERENCE_INCREMENT"