diff --git a/core/assets/version.properties b/core/assets/version.properties
index df8d6888bb..7ff1162d00 100644
--- a/core/assets/version.properties
+++ b/core/assets/version.properties
@@ -1,7 +1,7 @@
 #Autogenerated file. Do not modify.
-#Thu Feb 15 19:14:34 EST 2018
+#Fri Feb 16 11:30:06 EST 2018
 version=beta
-androidBuildCode=230
+androidBuildCode=234
 name=Mindustry
 code=3.3
-build=22
+build=custom build
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/distribution/Conveyor.java b/core/src/io/anuke/mindustry/world/blocks/types/distribution/Conveyor.java
index 2262004cd0..b412551773 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/distribution/Conveyor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/distribution/Conveyor.java
@@ -163,6 +163,10 @@ public class Conveyor extends Block{
 		long result = ItemPos.packItem(item, y*0.9f, pos, (byte)Mathf.random(255));
 		boolean inserted = false;
 
+		if(pos <= 0.00001f && entity.minitem <= 0.001f){
+			return; //TODO low fps stacked items: what now?
+		}
+
 		for(int i = 0; i < entity.convey.size; i ++){
 			if(compareItems(result, entity.convey.get(i)) < 0){
 				entity.convey.insert(i, result);