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--- a/net/minecraft/server/ItemRedstone.java
+++ b/net/minecraft/server/ItemRedstone.java
@@ -11,7 +11,7 @@
BlockPosition blockposition1 = flag ? blockposition : blockposition.shift(enumdirection);
ItemStack itemstack = entityhuman.b(enumhand);
- if (entityhuman.a(blockposition1, enumdirection, itemstack) && world.a(world.getType(blockposition1).getBlock(), blockposition1, false, enumdirection, (Entity) null) && Blocks.REDSTONE_WIRE.canPlace(world, blockposition1)) {
+ if (!itemstack.isEmpty() && entityhuman.a(blockposition1, enumdirection, itemstack) && world.a(world.getType(blockposition1).getBlock(), blockposition1, false, enumdirection, (Entity) null) && Blocks.REDSTONE_WIRE.canPlace(world, blockposition1)) { // CraftBukkit
world.setTypeUpdate(blockposition1, Blocks.REDSTONE_WIRE.getBlockData());
if (entityhuman instanceof EntityPlayer) {
CriterionTriggers.x.a((EntityPlayer) entityhuman, blockposition1, itemstack);
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