diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/inferno/InfernoPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/inferno/InfernoPlugin.java
index 736654f7fb..4bcf1f03cf 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/inferno/InfernoPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/inferno/InfernoPlugin.java
@@ -118,7 +118,7 @@ public class InfernoPlugin extends Plugin
 	@Getter(AccessLevel.PACKAGE)
 	private int currentWaveNumber;
 
-	private List<Actor> waveMonsters;
+	private final List<Actor> waveMonsters;
 
 	private InfernoPlugin()
 	{