diff --git a/src/main/java/net/minecraft/world/chunk/storage/AnvilChunkLoader.java b/src/main/java/net/minecraft/world/chunk/storage/AnvilChunkLoader.java
index ffa77ff..f57d398 100644
--- a/src/main/java/net/minecraft/world/chunk/storage/AnvilChunkLoader.java
+++ b/src/main/java/net/minecraft/world/chunk/storage/AnvilChunkLoader.java
@@ -212,6 +212,7 @@
 	{
 		AnvilChunkLoader.PendingChunk pendingchunk = null;
 		Object object = this.syncLockObject;
+		int key;
 
 		synchronized (this.syncLockObject)
 		{
@@ -223,7 +224,7 @@
 			TIntObjectIterator<PendingChunk> it = pendingSaves.iterator();
 			it.advance();
 			pendingchunk = it.value();
-			it.remove();
+			key = it.key();
 		}
 
 		if (pendingchunk != null)
@@ -236,6 +237,11 @@
 			{
 				exception.printStackTrace();
 			}
+			
+			synchronized (this.syncLockObject)
+			{
+				pendingSaves.remove(key);
+			}
 		}
 
 		return true;