From deec83ba63558b7ad904185acf07d40947971b6f Mon Sep 17 00:00:00 2001
From: asiekierka <asiekierka@gmail.com>
Date: Mon, 28 Sep 2015 11:01:12 +0200
Subject: [PATCH] fix #3029

---
 common/buildcraft/BuildCraftTransport.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/buildcraft/BuildCraftTransport.java b/common/buildcraft/BuildCraftTransport.java
index f9d590cd..3c018514 100644
--- a/common/buildcraft/BuildCraftTransport.java
+++ b/common/buildcraft/BuildCraftTransport.java
@@ -759,7 +759,7 @@ public class BuildCraftTransport extends BuildCraftMod {
 
 				pipeRecipes.add(recipe);
 
-				if (ingredients[1] instanceof ItemPipe) {
+				if (ingredients[1] instanceof ItemPipe && clas != PipeStructureCobblestone.class) {
 					PipeRecipe uncraft = new PipeRecipe();
 					uncraft.isShapeless = true;
 					uncraft.input = new Object[]{recipe.result};