diff --git a/pico_keyer.cpp b/pico_keyer.cpp
index c70877b..705a5f1 100644
--- a/pico_keyer.cpp
+++ b/pico_keyer.cpp
@@ -20,8 +20,6 @@ int main()
     settings.mode = Mode::IAMBIC_A;
     settings.wpm = 25;
 
-    //store_settings(settings);
-
     Settings newSettings{read_settings()};
 
     printf("Iambic mode (loaded): %d\n", static_cast<int>(newSettings.mode));
diff --git a/settings.cpp b/settings.cpp
index 9d9f2e9..ea69a3a 100644
--- a/settings.cpp
+++ b/settings.cpp
@@ -34,12 +34,37 @@ void store_settings(Settings &settings)
         sleep_ms(250);
         gpio_put(LED_PIN, 0);
         sleep_ms(250);
+        gpio_put(LED_PIN, 1);
+        sleep_ms(250);
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
     }
 }
 
 Settings read_settings()
 {
     Settings settings;
+    
     memcpy(&settings, flash_target_contents, sizeof(struct Settings));
+
+    if(settings.magic_number != MAGIC_NUMBER) {
+        settings = Settings();
+
+        gpio_put(LED_PIN, 1);
+        sleep_ms(1000);
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
+        gpio_put(LED_PIN, 1);
+        sleep_ms(1000);
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
+        gpio_put(LED_PIN, 1);
+        sleep_ms(1000);
+        gpio_put(LED_PIN, 0);
+        sleep_ms(250);
+    }
+
+    store_settings(settings);
+
     return settings;
 }
\ No newline at end of file
diff --git a/settings.h b/settings.h
index ce0b95f..e1f5e62 100644
--- a/settings.h
+++ b/settings.h
@@ -3,6 +3,8 @@
 
 #include <pico/flash.h>
 
+const uint16_t MAGIC_NUMBER = 2;
+
 enum class Mode : uint8_t
 {
     IAMBIC_A = 0,
@@ -12,9 +14,10 @@ enum class Mode : uint8_t
 
 struct Settings
 {
-    Mode mode{Mode::IAMBIC_B};             // Byte 1
-    uint8_t wpm{20};                       // Byte 2
-    uint8_t dummy[FLASH_PAGE_SIZE - 2]{0}; // Fill up to next flash page size boundary
+    uint16_t magic_number;                 // Bytes:  2
+    Mode mode{Mode::IAMBIC_B};             // Bytes:  1
+    uint8_t wpm{20};                       // Bytes:  1
+    uint8_t dummy[FLASH_PAGE_SIZE - 4]{0}; // Sum  :  4
 };
 
 void store_settings(Settings &settings);