diff --git a/esphome/components/dht/dht.cpp b/esphome/components/dht/dht.cpp
index db1c851d5f..3f9f9c57f4 100644
--- a/esphome/components/dht/dht.cpp
+++ b/esphome/components/dht/dht.cpp
@@ -135,7 +135,8 @@ bool HOT IRAM_ATTR DHT::read_sensor_(float *temperature, float *humidity, bool r
 
       // Wait for falling edge
       while (this->pin_->digital_read()) {
-        if ((end_time = micros()) - start_time > 90) {
+        end_time = micros();
+        if (end_time - start_time > 90) {
           if (i < 0) {
             error_code = 3;
           } else {