diff --git a/src/main/java/com/adventofcode/flashk/day25/Key.java b/src/main/java/com/adventofcode/flashk/day25/Key.java
index bd7c705..1807b49 100644
--- a/src/main/java/com/adventofcode/flashk/day25/Key.java
+++ b/src/main/java/com/adventofcode/flashk/day25/Key.java
@@ -7,13 +7,13 @@
 public class Key {
 
     @Getter
-    private int[] heights = new int[5];
+    private final int[] heights = new int[5];
 
     public Key(char[][] keyMap) {
-        char[][] trasposedMap = Array2DUtil.transpose(keyMap);
+        char[][] transposedMap = Array2DUtil.transpose(keyMap);
 
-        for(int i = 0; i < trasposedMap.length; i++) {
-            String rowValue = new String(trasposedMap[i]);
+        for(int i = 0; i < transposedMap.length; i++) {
+            String rowValue = new String(transposedMap[i]);
             heights[i] = StringUtils.countMatches(rowValue, "#")-1;
         }
     }
diff --git a/src/main/java/com/adventofcode/flashk/day25/Lock.java b/src/main/java/com/adventofcode/flashk/day25/Lock.java
index 73e1d6f..5a54038 100644
--- a/src/main/java/com/adventofcode/flashk/day25/Lock.java
+++ b/src/main/java/com/adventofcode/flashk/day25/Lock.java
@@ -5,14 +5,14 @@
 
 public class Lock {
 
-    private int[] pins = new int[5];
+    private final int[] pins = new int[5];
 
     public Lock(char[][] lockMap) {
 
-        char[][] trasposedMap = Array2DUtil.transpose(lockMap);
+        char[][] transposedMap = Array2DUtil.transpose(lockMap);
 
-        for(int i = 0; i < trasposedMap.length; i++) {
-            String rowValue = new String(trasposedMap[i]);
+        for(int i = 0; i < transposedMap.length; i++) {
+            String rowValue = new String(transposedMap[i]);
             pins[i] = StringUtils.countMatches(rowValue, "#")-1;
         }
     }