diff --git a/common/fml_at.cfg b/common/fml_at.cfg
index f90e516166..2ddb50d694 100644
--- a/common/fml_at.cfg
+++ b/common/fml_at.cfg
@@ -186,6 +186,8 @@ public gt.cq
 public kw
 # EntityAITasks taskList
 public kv.a
+# BlockChest isOcelotBlockingChest (a bounding box check actually)
+public afd.n(Luo;III)Z
 # EntityLiving tasks
 public jv.bg
 # EntityAIOcelotSit nearestSittableBlock and isblocksittable