diff --git a/include/temperature.h b/include/temperature.h
index 543d748..4b50be8 100644
--- a/include/temperature.h
+++ b/include/temperature.h
@@ -113,9 +113,12 @@ void temperature_loop(unsigned long loopmillis) {
       Serial.println("Warn: Request Temperatures Timeout!");
       publishInfo("error/temperature","Warn: Request Temperatures Timeout!");
       flag_requestTemperatures=false;
+      last_read_ds18b20=loopmillis;
     }
     if (!flag_requestTemperatures) {
-      sensors.requestTemperatures(); //this takes ~600ms
+      sensors.setWaitForConversion(false); //make async
+      sensors.requestTemperatures(); //this takes ~600ms in non async mode. about 2ms in async mode
+      sensors.setWaitForConversion(true);
       flag_requestTemperatures=true;
     }
     if (sensors.isConversionComplete()) {