diff --git a/content/electronic-safe/README.md b/content/electronic-safe/README.md
index 9b738ca..ba35851 100644
--- a/content/electronic-safe/README.md
+++ b/content/electronic-safe/README.md
@@ -44,11 +44,12 @@ The code is divided into three modules:
 | 8           | LCD    | D6         |
 | 7           | LCD    | D7         |
 | 6           | Servo  | Signal     |
-| 5           | Keypad | R4         |
-| 4           | Keypad | R3         |
-| 3           | Keypad | R2         |
-| 2           | Keypad | R1         |
-| A3          | Keypad | C4         |
-| A2          | Keypad | C3         |
-| A1          | Keypad | C2         |
-| A0          | Keypad | C1         |
+| 5           | Keypad | R1         |
+| 4           | Keypad | R2         |
+| 3           | Keypad | R3         |
+| 2           | Keypad | R4         |
+| A3          | Keypad | C1         |
+| A2          | Keypad | C2         |
+| A1          | Keypad | C3         |
+| A0          | Keypad | C4         |
+
diff --git a/content/electronic-safe/electronic-safe.ino b/content/electronic-safe/electronic-safe.ino
index b576807..ac5e389 100644
--- a/content/electronic-safe/electronic-safe.ino
+++ b/content/electronic-safe/electronic-safe.ino
@@ -23,8 +23,8 @@ LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
 /* Keypad setup */
 const byte KEYPAD_ROWS = 4;
 const byte KEYPAD_COLS = 4;
-byte rowPins[KEYPAD_ROWS] = {2, 3, 4, 5};
-byte colPins[KEYPAD_COLS] = {A0, A1, A2, A3};
+byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
+byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
 char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
   {'1', '2', '3', 'A'},
   {'4', '5', '6', 'B'},