diff --git a/MainModesArbiter.c b/MainModesArbiter.c
index 2bd4874..f4682f2 100644
--- a/MainModesArbiter.c
+++ b/MainModesArbiter.c
@@ -41,9 +41,9 @@ static _Noreturn void Mma_Thread(tMma *env) {
 
         SystemDelayMs(1000);
 
-        if (osMutexAcquire(env->adcTask0.access, 1000) == osOK) {
-            temp = get_temperature_fast_KST45(env->adcTask0.ADC_Data[0]);
-            osMutexRelease(env->adcTask0.access);
+        if (osMutexAcquire(env->adcTask1.access, 1000) == osOK) {
+            temp = get_temperature_fast_KST45(env->adcTask1.ADC_Data[0]);
+            osMutexRelease(env->adcTask1.access);
         }
 
         LoggerFormatInfo(&env->slog.logger, LOG_TASK_ARB, "Temp = %d", temp)