diff --git a/esphome/components/mhz19/mhz19.h b/esphome/components/mhz19/mhz19.h
index d9e7145a08..0b976a87bd 100644
--- a/esphome/components/mhz19/mhz19.h
+++ b/esphome/components/mhz19/mhz19.h
@@ -30,7 +30,7 @@ class MHZ19Component : public PollingComponent, public uart::UARTDevice {
 
   sensor::Sensor *temperature_sensor_{nullptr};
   sensor::Sensor *co2_sensor_{nullptr};
-  MHZ19ABCLogic abc_logic_{MHZ19_ABC_NONE}
+  MHZ19ABCLogic abc_logic_{MHZ19_ABC_NONE};
 };
 
 }  // namespace mhz19