diff --git a/app/src/main/java/com/polar/mirror/ActionPanelController.java b/app/src/main/java/com/polar/mirror/ActionPanelController.java
index 7c61c2d..5a98ccc 100644
--- a/app/src/main/java/com/polar/mirror/ActionPanelController.java
+++ b/app/src/main/java/com/polar/mirror/ActionPanelController.java
@@ -14,8 +14,8 @@
 import androidx.annotation.NonNull;
 
 class ActionPanelControllerData implements Parcelable{
-    public Boolean isPanelVisible;
-    public Boolean isFirstTimeHide;
+    public final Boolean isPanelVisible;
+    public final Boolean isFirstTimeHide;
 
     public static final String PARCELABLE_NAME = "ActionPanelControllerData";
 
@@ -31,7 +31,7 @@ protected ActionPanelControllerData(Parcel in) {
 
     @Override
     public void writeToParcel(@NonNull Parcel dest, int flags) {
-        // We use int here to keep our code compatiable with API level < 29
+        // We use int here to keep our code compatible with API level < 29
         if(isPanelVisible){
             dest.writeInt(1);
         } else {
diff --git a/app/src/main/java/com/polar/mirror/FreezeController.java b/app/src/main/java/com/polar/mirror/FreezeController.java
index 89c335a..d059df5 100644
--- a/app/src/main/java/com/polar/mirror/FreezeController.java
+++ b/app/src/main/java/com/polar/mirror/FreezeController.java
@@ -53,7 +53,7 @@ public class FreezeController {
     /**
      * Should be called when camera is ready
      * @param provider camera provider
-     * @param lcOwner lifecycle owner used for binding camera usecases
+     * @param lcOwner lifecycle owner used for binding camera use-cases
      */
     public void onCameraInitialized(@NonNull ProcessCameraProvider provider, LifecycleOwner lcOwner){
         CameraSelector cameraSelector = new CameraSelector.Builder()