diff --git a/common/mekanism/api/MekanismAPI.java b/common/mekanism/api/MekanismAPI.java
index d500de6a9..147e24f7e 100644
--- a/common/mekanism/api/MekanismAPI.java
+++ b/common/mekanism/api/MekanismAPI.java
@@ -12,23 +12,15 @@ public class MekanismAPI
 	
 	public static boolean isBlockCompatible(int id, int meta)
 	{
-		boolean has = false;
-		
 		for(BlockInfo i : cardboardBoxIgnore)
 		{
 			if(i.id == id && (i.meta == OreDictionary.WILDCARD_VALUE || i.meta == meta))
 			{
-				has = true;
-				break;
+				return false;
 			}
 		}
 		
-		if(!has)
-		{
-			return true;
-		}
-		
-		return false;
+		return true;
 	}
 	
 	public static void addBoxBlacklist(int id, int meta)
diff --git a/common/mekanism/common/item/ItemBlockCardboardBox.java b/common/mekanism/common/item/ItemBlockCardboardBox.java
index 7ff1343d7..3f18a808e 100644
--- a/common/mekanism/common/item/ItemBlockCardboardBox.java
+++ b/common/mekanism/common/item/ItemBlockCardboardBox.java
@@ -75,7 +75,7 @@ public class ItemBlockCardboardBox extends ItemBlock
 			int id = world.getBlockId(x, y, z);
 			int meta = world.getBlockMetadata(x, y, z);
 			
-	    	if(!world.isRemote && !MekanismAPI.isBlockCompatible(id, meta))
+	    	if(!world.isRemote && MekanismAPI.isBlockCompatible(id, meta))
 	    	{
     			BlockData data = new BlockData();
     			data.id = id;