diff --git a/esphome/components/dynamic_lamp/dynamic_lamp.cpp b/esphome/components/dynamic_lamp/dynamic_lamp.cpp
index db8cf1bce7..1136042a87 100644
--- a/esphome/components/dynamic_lamp/dynamic_lamp.cpp
+++ b/esphome/components/dynamic_lamp/dynamic_lamp.cpp
@@ -105,7 +105,7 @@ void DynamicLamp::set_available_outputs(std::string output_list) {
   }
 }
 
-void add_lamp_output_(uint8_t lamp_number, LinkedOutput output) {
+void DynamicLamp::add_lamp_output_(uint8_t lamp_number, LinkedOutput output) {
   this->active_lamps_[lamp_number].used_outputs[output.output_index] = true;
 }
 
diff --git a/esphome/components/dynamic_lamp/dynamic_lamp.h b/esphome/components/dynamic_lamp/dynamic_lamp.h
index a45649fa98..d168859f4d 100644
--- a/esphome/components/dynamic_lamp/dynamic_lamp.h
+++ b/esphome/components/dynamic_lamp/dynamic_lamp.h
@@ -45,7 +45,6 @@ class DynamicLamp : public Component {
   void add_lamp_output_(uint8_t lamp_number, LinkedOutput output);
   void restore_lamp_values_(uint8_t lamp_number);
   void set_lamp_values_(uint8_t lamp_number, bool active, uint16_t selected_outputs, uint8_t mode, uint8_t mode_value);
-  size_t index_of_(Iter first, Iter last, typename const std::iterator_traits<Iter>::value_type& x);
   std::string_view ltrim_(std::string_view str);
   std::string_view rtrim_(std::string_view str);
   std::string_view trim_(std::string_view str);