diff --git a/src/main/java/net/runelite/deob/attributes/code/Instruction.java b/src/main/java/net/runelite/deob/attributes/code/Instruction.java
index 85e8fc5ffd..8abc663c3b 100644
--- a/src/main/java/net/runelite/deob/attributes/code/Instruction.java
+++ b/src/main/java/net/runelite/deob/attributes/code/Instruction.java
@@ -220,6 +220,10 @@ public abstract class Instruction implements Cloneable
 	{
 		assert to != null;
 		assert to != this;
+		
+		assert this.jump.contains(to) == to.from.contains(this);
+		if (this.jump.contains(to))
+			return; // switch statements can jump to the same place multiple times
 
 		this.jump.add(to);
 		to.from.add(this);