diff --git a/libs/fastfile/PC/fastfile_cod7_pc.cpp b/libs/fastfile/PC/fastfile_cod7_pc.cpp
index a2f4ab6..d33f148 100644
--- a/libs/fastfile/PC/fastfile_cod7_pc.cpp
+++ b/libs/fastfile/PC/fastfile_cod7_pc.cpp
@@ -72,9 +72,9 @@ bool FastFile_COD7_PC::Load(const QString aFilePath) {
 bool FastFile_COD7_PC::Load(const QByteArray aData) {
     QByteArray decompressedData;
 
-    // Create a QDataStream on the input data.
-    QDataStream fastFileStream(aData);
-    fastFileStream.setByteOrder(QDataStream::LittleEndian);
+    // Create a XDataStream on the input data.
+    XDataStream fastFileStream(aData);
+    fastFileStream.setByteOrder(XDataStream::LittleEndian);
 
     // Parse header values.
     SetCompany(pParseFFCompany(&fastFileStream));