diff --git a/components/custom_monochromatic/monochromatic_light_output.h b/components/custom_monochromatic/monochromatic_light_output.h
index bcbeb21..a0bd870 100644
--- a/components/custom_monochromatic/monochromatic_light_output.h
+++ b/components/custom_monochromatic/monochromatic_light_output.h
@@ -9,6 +9,9 @@
 namespace esphome {
 namespace c_monochromatic {
 
+
+static const char *TAG = "empty_i2c_sensor.sensor";
+
 enum State { Off, Auto, On };
 
 class MonochromaticLightOutput : public light::LightOutput,