--- a/net/minecraft/world/WorldSettings.java
+++ b/net/minecraft/world/WorldSettings.java
@@ -62,6 +62,7 @@
    }
 
    public WorldSettings func_234948_a_(Difficulty p_234948_1_) {
+      net.minecraftforge.common.ForgeHooks.onDifficultyChange(p_234948_1_, this.field_234944_d_);
       return new WorldSettings(this.field_234943_a_, this.field_77172_b, this.field_77170_d, p_234948_1_, this.field_77168_f, this.field_234945_f_, this.field_234946_g_);
    }
 
