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-rw-r--r--src/main/java/net/minecraft/server/BlockRedstoneWire.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/net/minecraft/server/BlockRedstoneWire.java b/src/main/java/net/minecraft/server/BlockRedstoneWire.java
index e312fa84..88dda17b 100644
--- a/src/main/java/net/minecraft/server/BlockRedstoneWire.java
+++ b/src/main/java/net/minecraft/server/BlockRedstoneWire.java
@@ -280,7 +280,7 @@ public class BlockRedstoneWire extends Block {
if (!flag) {
this.b_(world, i, j, k, i1);
world.e(i, j, k, 0);
- } else if(Block.byId[l].c() || Block.DIODE_OFF.id == l && Block.DIODE_ON.id == l) { //condition added by Craftbukkit
+ } else if((Block.byId[l] != null && Block.byId[l].c()) || Block.DIODE_OFF.id == l && Block.DIODE_ON.id == l) { //condition added by Craftbukkit
this.g(world, i, j, k);
}