diff --git a/esphome/components/key_collector/key_collector.h b/esphome/components/key_collector/key_collector.h
index 6e585ddd8e..35e8141ce5 100644
--- a/esphome/components/key_collector/key_collector.h
+++ b/esphome/components/key_collector/key_collector.h
@@ -13,8 +13,8 @@ class KeyCollector : public Component {
   void loop() override;
   void dump_config() override;
   void set_provider(key_provider::KeyProvider *provider);
-  void set_min_length(int min_length) { this->min_length_ = min_length; };
-  void set_max_length(int max_length) { this->max_length_ = max_length; };
+  void set_min_length(uint32_t min_length) { this->min_length_ = min_length; };
+  void set_max_length(uint32_t max_length) { this->max_length_ = max_length; };
   void set_start_keys(std::string start_keys) { this->start_keys_ = std::move(start_keys); };
   void set_end_keys(std::string end_keys) { this->end_keys_ = std::move(end_keys); };
   void set_end_key_required(bool end_key_required) { this->end_key_required_ = end_key_required; };
@@ -33,8 +33,8 @@ class KeyCollector : public Component {
  protected:
   void key_pressed_(uint8_t key);
 
-  int min_length_{0};
-  int max_length_{0};
+  uint32_t min_length_{0};
+  uint32_t max_length_{0};
   std::string start_keys_;
   std::string end_keys_;
   bool end_key_required_{false};