diff --git a/src/org/apollo/Server.java b/src/org/apollo/Server.java
index 2534bd29..dc97737c 100644
--- a/src/org/apollo/Server.java
+++ b/src/org/apollo/Server.java
@@ -167,7 +167,7 @@ public final class Server {
 		serviceManager.startAll();
 
 		int releaseNo = context.getRelease().getReleaseNumber();
-		IndexedFileSystem fs = new IndexedFileSystem(Paths.get("data/fs/", Integer.toString(releaseNo)), true);
+		IndexedFileSystem fs = new IndexedFileSystem(Paths.get("data/fs", Integer.toString(releaseNo)), true);
 		World.getWorld().init(releaseNo, fs, manager);
 	}
 
diff --git a/src/org/apollo/fs/IndexedFileSystem.java b/src/org/apollo/fs/IndexedFileSystem.java
index 40b3bef1..50d3ee0c 100644
--- a/src/org/apollo/fs/IndexedFileSystem.java
+++ b/src/org/apollo/fs/IndexedFileSystem.java
@@ -177,7 +177,7 @@ public final class IndexedFileSystem implements Closeable {
 			int nextType = header[7] & 0xFF;
 
 			if (i != curChunk) {
-				throw new IOException("Chunk id mismatch.");
+				Preconditions.checkArgument(i == curChunk, "Chunk id mismatch.");
 			}
 
 			int chunkSize = size - read;