diff --git a/src/OpenThermTask.h b/src/OpenThermTask.h
index 7639a31..6873a66 100644
--- a/src/OpenThermTask.h
+++ b/src/OpenThermTask.h
@@ -66,7 +66,7 @@ protected:
       this->delay(25);
     });
 
-    ot->setMinWaitTimeForStartBit(19500);
+    ot->setMinWaitTimeForStartBit(20000);
     ot->begin(OpenThermTask::handleInterrupt);
 
     #ifdef LED_OT_RX_PIN