diff --git a/esphome/components/ld2412/ld2412.cpp b/esphome/components/ld2412/ld2412.cpp
index 6ff6963e9f..38e1a59aba 100644
--- a/esphome/components/ld2412/ld2412.cpp
+++ b/esphome/components/ld2412/ld2412.cpp
@@ -825,13 +825,6 @@ void LD2412Component::get_gate_threshold() {
   this->send_command_(CMD_QUERY_STATIC_GATE_SENS, nullptr, 0);
 }
 
-void LD2412Component::set_gate_still_threshold_number(uint8_t gate, number::Number *n) {
-  this->gate_still_threshold_numbers_[gate] = n;
-}
-
-void LD2412Component::set_gate_move_threshold_number(uint8_t gate, number::Number *n) {
-  this->gate_move_threshold_numbers_[gate] = n;
-}
 #endif
 
 void LD2412Component::set_light_out_control() {
diff --git a/esphome/components/ld2412/ld2412.h b/esphome/components/ld2412/ld2412.h
index 5dd5e7bcde..7fd2245978 100644
--- a/esphome/components/ld2412/ld2412.h
+++ b/esphome/components/ld2412/ld2412.h
@@ -85,8 +85,10 @@ class LD2412Component : public Component, public uart::UARTDevice {
   void set_light_out_control();
   void set_basic_config();
 #ifdef USE_NUMBER
-  void set_gate_move_threshold_number(uint8_t gate, number::Number *n);
-  void set_gate_still_threshold_number(uint8_t gate, number::Number *n);
+  void set_gate_move_threshold_number(uint8_t gate, number::Number *n) { this->gate_move_threshold_numbers_[gate] = n; }
+  void set_gate_still_threshold_number(uint8_t gate, number::Number *n) {
+    this->gate_still_threshold_numbers_[gate] = n;
+  }
   void set_gate_threshold();
   void get_gate_threshold();
 #endif