diff --git a/src/main/java/net/runelite/cache/fs/DataFile.java b/src/main/java/net/runelite/cache/fs/DataFile.java
index 5a261d3f17..8ad21537c0 100644
--- a/src/main/java/net/runelite/cache/fs/DataFile.java
+++ b/src/main/java/net/runelite/cache/fs/DataFile.java
@@ -15,12 +15,14 @@ public class DataFile implements Closeable
 	
 	private static final int SECTOR_SIZE = 520;
 	
+	private final Store store;
 	private final int datafileId;
 	private final RandomAccessFile dat;
 	private final byte[] readCachedBuffer = new byte[SECTOR_SIZE];
 	
-	public DataFile(int id, File file) throws FileNotFoundException
+	public DataFile(Store store, int id, File file) throws FileNotFoundException
 	{
+		this.store = store;
 		this.datafileId = id;
 		dat = new RandomAccessFile(file, "rw");
 	}
diff --git a/src/main/java/net/runelite/cache/fs/IndexFile.java b/src/main/java/net/runelite/cache/fs/IndexFile.java
index 4bbb6d6890..527931a482 100644
--- a/src/main/java/net/runelite/cache/fs/IndexFile.java
+++ b/src/main/java/net/runelite/cache/fs/IndexFile.java
@@ -12,12 +12,14 @@ public class IndexFile
 	private static final Logger logger = LoggerFactory.getLogger(IndexFile.class);
 	private static final int INDEX_ENTRY_LEN = 6;
 	
-	private int indexFileId;
-	private RandomAccessFile idx;
+	private final Store store;
+	private final int indexFileId;
+	private final RandomAccessFile idx;
 	private final byte[] buffer = new byte[6];
 	
-	public IndexFile(int indexFileId, File file) throws FileNotFoundException
+	public IndexFile(Store store, int indexFileId, File file) throws FileNotFoundException
 	{
+		this.store = store;
 		this.indexFileId = indexFileId;
 		this.idx = new RandomAccessFile(file, "rw");
 	}
diff --git a/src/main/java/net/runelite/cache/fs/Store.java b/src/main/java/net/runelite/cache/fs/Store.java
new file mode 100644
index 0000000000..1ce67847be
--- /dev/null
+++ b/src/main/java/net/runelite/cache/fs/Store.java
@@ -0,0 +1,5 @@
+package net.runelite.cache.fs;
+
+public class Store
+{
+}
diff --git a/src/test/java/net/runelite/cache/fs/DataFileTest.java b/src/test/java/net/runelite/cache/fs/DataFileTest.java
index e8d011e367..8643544287 100644
--- a/src/test/java/net/runelite/cache/fs/DataFileTest.java
+++ b/src/test/java/net/runelite/cache/fs/DataFileTest.java
@@ -12,7 +12,8 @@ public class DataFileTest
 	public void test1() throws IOException
 	{
 		File file = new File("d:/rs/07/test/test.dat");
-		DataFile df = new DataFile(42, file);
+		Store store = new Store();
+		DataFile df = new DataFile(store, 42, file);
 		int sector = df.write(3, ByteBuffer.wrap("test".getBytes()));
 		ByteBuffer buf = df.read(3, sector, 4);
 		String str = new String(buf.array());
@@ -27,7 +28,8 @@ public class DataFileTest
 		for (int i = 0; i < 1024; ++i) b[i] = (byte) i;
 		
 		File file = new File("d:/rs/07/test/test.dat");
-		DataFile df = new DataFile(42, file);
+		Store store = new Store();
+		DataFile df = new DataFile(store, 42, file);
 		int sector = df.write(0x1FFFF, ByteBuffer.wrap(b));
 		ByteBuffer buf = df.read(0x1FFFF, sector, b.length);
 		Assert.assertArrayEquals(b, buf.array());
diff --git a/src/test/java/net/runelite/cache/fs/IndexFileTest.java b/src/test/java/net/runelite/cache/fs/IndexFileTest.java
index 5cce282d6c..13b9da03ce 100644
--- a/src/test/java/net/runelite/cache/fs/IndexFileTest.java
+++ b/src/test/java/net/runelite/cache/fs/IndexFileTest.java
@@ -11,7 +11,8 @@ public class IndexFileTest
 	public void test1() throws IOException
 	{
 		File file = new File("d:/rs/07/test/test.dat");
-		IndexFile index = new IndexFile(5, file);
+		Store store = new Store();
+		IndexFile index = new IndexFile(store, 5, file);
 		IndexEntry entry = new IndexEntry(index, 7, 8, 9);
 		index.write(entry);
 		IndexEntry entry2 = index.read(7);