diff --git a/src/main/java/net/frozenblock/wilderwild/mixin/server/general/MobMixin.java b/src/main/java/net/frozenblock/wilderwild/mixin/server/general/MobMixin.java
index a64f10c1e8..5254a2e790 100644
--- a/src/main/java/net/frozenblock/wilderwild/mixin/server/general/MobMixin.java
+++ b/src/main/java/net/frozenblock/wilderwild/mixin/server/general/MobMixin.java
@@ -19,9 +19,7 @@
 public abstract class MobMixin extends LivingEntity {
 
     @Shadow
-    public void setPathfindingMalus(BlockPathTypes blockPathTypes, float f) {
-		throw new AssertionError("Mixin injection failed - WilderWild MobMixin.");
-    }
+    public abstract void setPathfindingMalus(BlockPathTypes nodeType, float malus);
 
     private MobMixin(EntityType<? extends LivingEntity> entityType, Level level) {
         super(entityType, level);