diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersGloryOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersGloryOverlay.java
index d5b9d32afa..3423fa083d 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersGloryOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersGloryOverlay.java
@@ -28,8 +28,8 @@ import net.runelite.client.ui.overlay.components.TitleComponent;
 @Singleton
 public class WhaleWatchersGloryOverlay extends Overlay
 {
-	private WhaleWatchersPlugin plugin;
-	private PanelComponent panelComponent;
+	private final WhaleWatchersPlugin plugin;
+	private final PanelComponent panelComponent;
 
 	@Inject
 	private ItemManager itemManager;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersOverlay.java
index a915399cab..2ee2ed02e3 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersOverlay.java
@@ -31,9 +31,9 @@ import net.runelite.client.ui.overlay.components.TitleComponent;
 @Singleton
 public class WhaleWatchersOverlay extends Overlay
 {
-	private Client client;
-	private WhaleWatchersPlugin plugin;
-	private PanelComponent panelComponent;
+	private final Client client;
+	private final WhaleWatchersPlugin plugin;
+	private final PanelComponent panelComponent;
 	private String lastOpponent = "-";
 
 
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersProtOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersProtOverlay.java
index 17de8ac9b8..f93a397d2e 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersProtOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersProtOverlay.java
@@ -34,8 +34,8 @@ import net.runelite.client.ui.overlay.OverlayUtil;
 public class WhaleWatchersProtOverlay extends Overlay
 {
 
-	private Client client;
-	private WhaleWatchersPlugin plugin;
+	private final Client client;
+	private final WhaleWatchersPlugin plugin;
 
 	@Inject
 	public WhaleWatchersProtOverlay(final Client client, final WhaleWatchersPlugin plugin)
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersSmiteableOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersSmiteableOverlay.java
index 0d2cd567e9..4a5b434900 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersSmiteableOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/whalewatchers/WhaleWatchersSmiteableOverlay.java
@@ -28,8 +28,8 @@ import net.runelite.client.ui.overlay.components.TitleComponent;
 @Singleton
 public class WhaleWatchersSmiteableOverlay extends Overlay
 {
-	private WhaleWatchersPlugin plugin;
-	private PanelComponent panelComponent;
+	private final WhaleWatchersPlugin plugin;
+	private final PanelComponent panelComponent;
 
 
 	@Inject