diff --git a/esphome/components/fingerprint_grow/fingerprint_grow.cpp b/esphome/components/fingerprint_grow/fingerprint_grow.cpp
index 3b8c52fea2..1d6cb776b7 100644
--- a/esphome/components/fingerprint_grow/fingerprint_grow.cpp
+++ b/esphome/components/fingerprint_grow/fingerprint_grow.cpp
@@ -51,7 +51,7 @@ void FingerprintGrowComponent::update() {
 void FingerprintGrowComponent::setup() {
   ESP_LOGCONFIG(TAG, "Setting up Grow Fingerprint Reader...");
   if (this->check_password_()) {
-    if (this->new_password_ != nullptr) {
+    if (this->new_password_ != -1) {
       if (this->set_password_())
         return;
     } else {
@@ -202,9 +202,9 @@ bool FingerprintGrowComponent::check_password_() {
 }
 
 bool FingerprintGrowComponent::set_password_() {
-  ESP_LOGI(TAG, "Setting new password: %d", *this->new_password_);
-  this->data_ = {SET_PASSWORD, (uint8_t)(*this->new_password_ >> 24), (uint8_t)(*this->new_password_ >> 16),
-                 (uint8_t)(*this->new_password_ >> 8), (uint8_t)(*this->new_password_ & 0xFF)};
+  ESP_LOGI(TAG, "Setting new password: %d", this->new_password_);
+  this->data_ = {SET_PASSWORD, (uint8_t)(this->new_password_ >> 24), (uint8_t)(this->new_password_ >> 16),
+                 (uint8_t)(this->new_password_ >> 8), (uint8_t)(this->new_password_ & 0xFF)};
   if (this->send_command_() == OK) {
     ESP_LOGI(TAG, "New password successfully set");
     ESP_LOGI(TAG, "Define the new password in your configuration and reflash now");
diff --git a/esphome/components/fingerprint_grow/fingerprint_grow.h b/esphome/components/fingerprint_grow/fingerprint_grow.h
index 7ec253ff3a..e50418a768 100644
--- a/esphome/components/fingerprint_grow/fingerprint_grow.h
+++ b/esphome/components/fingerprint_grow/fingerprint_grow.h
@@ -96,7 +96,7 @@ class FingerprintGrowComponent : public PollingComponent, public uart::UARTDevic
   }
   void set_sensing_pin(GPIOPin *sensing_pin) { this->sensing_pin_ = sensing_pin; }
   void set_password(uint32_t password) { this->password_ = password; }
-  void set_new_password(uint32_t new_password) { this->new_password_ = &new_password; }
+  void set_new_password(uint32_t new_password) { this->new_password_ = new_password; }
   void set_fingerprint_count_sensor(sensor::Sensor *fingerprint_count_sensor) {
     this->fingerprint_count_sensor_ = fingerprint_count_sensor;
   }
@@ -153,7 +153,7 @@ class FingerprintGrowComponent : public PollingComponent, public uart::UARTDevic
   uint8_t address_[4] = {0xFF, 0xFF, 0xFF, 0xFF};
   uint16_t capacity_ = 64;
   uint32_t password_ = 0x0;
-  uint32_t *new_password_{nullptr};
+  uint32_t new_password_ = -1;
   GPIOPin *sensing_pin_{nullptr};
   uint8_t enrollment_image_ = 0;
   uint16_t enrollment_slot_ = 0;