diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/timetracking/hunter/BirdHouseTracker.java b/runelite-client/src/main/java/net/runelite/client/plugins/timetracking/hunter/BirdHouseTracker.java
index bfb71e3287..1c30f2da58 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/timetracking/hunter/BirdHouseTracker.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/timetracking/hunter/BirdHouseTracker.java
@@ -50,7 +50,7 @@ public class BirdHouseTracker
 	// average time taken to harvest 10 birds, in seconds
 	static final int BIRD_HOUSE_DURATION = (int) Duration.ofMinutes(50).getSeconds();
 
-	private static ImmutableSet<Integer> FOSSIL_ISLAND_REGIONS = ImmutableSet.of(14650, 14651, 14652, 14906, 14907, 15162, 15163);
+	private static final ImmutableSet<Integer> FOSSIL_ISLAND_REGIONS = ImmutableSet.of(14650, 14651, 14652, 14906, 14907, 15162, 15163);
 
 	private final Client client;
 	private final ItemManager itemManager;