diff --git a/esphome/components/template/lock/template_lock.cpp b/esphome/components/template/lock/template_lock.cpp
index 634924a805..8ed87b9736 100644
--- a/esphome/components/template/lock/template_lock.cpp
+++ b/esphome/components/template/lock/template_lock.cpp
@@ -11,6 +11,11 @@ static const char *const TAG = "template.lock";
 TemplateLock::TemplateLock()
     : lock_trigger_(new Trigger<>()), unlock_trigger_(new Trigger<>()), open_trigger_(new Trigger<>()) {}
 
+void TemplateLock::setup() {
+  if (!this->f_.has_value())
+    this->disable_loop();
+}
+
 void TemplateLock::loop() {
   auto val = this->f_();
   if (val.has_value()) {
diff --git a/esphome/components/template/lock/template_lock.h b/esphome/components/template/lock/template_lock.h
index de5189875f..14fca4635e 100644
--- a/esphome/components/template/lock/template_lock.h
+++ b/esphome/components/template/lock/template_lock.h
@@ -12,6 +12,7 @@ class TemplateLock : public lock::Lock, public Component {
  public:
   TemplateLock();
 
+  void setup() override;
   void dump_config() override;
 
   template<typename F> void set_state_lambda(F &&f) { this->f_.set(std::forward<F>(f)); }
diff --git a/tests/integration/fixtures/runtime_stats.yaml b/tests/integration/fixtures/runtime_stats.yaml
index aad1c275fb..fd34cdb939 100644
--- a/tests/integration/fixtures/runtime_stats.yaml
+++ b/tests/integration/fixtures/runtime_stats.yaml
@@ -32,6 +32,7 @@ switch:
     name: "Test Switch"
     id: test_switch
     optimistic: true
+    lambda: return false;
 
 interval:
   - interval: 0.5s