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-rw-r--r--src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
index 13ac9bf2..f432abe1 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
@@ -124,6 +124,8 @@ public class CraftBlockState implements BlockState {
public void setType(final Material type) {
Preconditions.checkArgument(type != null, "Material cannot be null");
+ Preconditions.checkArgument(type.isBlock(), "Material must be a block!");
+
if (this.getType() != type) {
this.data = CraftMagicNumbers.getBlock(type).getBlockData();
}