diff --git a/src/files.cpp b/src/files.cpp
index 5bcc3d7bb4..b42aefece5 100644
--- a/src/files.cpp
+++ b/src/files.cpp
@@ -50,6 +50,11 @@
 //
 //==========================================================================
 
+FILE *FileReader::openfd(const char *filename)
+{
+	return fopen(filename, "rb");
+}
+
 FileReader::FileReader ()
 : File(NULL), Length(0), StartPos(0), FilePos(0), CloseOnDestruct(false)
 {
@@ -93,7 +98,7 @@ FileReader::~FileReader ()
 
 bool FileReader::Open (const char *filename)
 {
-	File = fopen (filename, "rb");
+	File = openfd (filename);
 	if (File == NULL) return false;
 	FilePos = 0;
 	StartPos = 0;
diff --git a/src/files.h b/src/files.h
index 94255b1a0b..d0c769ba15 100644
--- a/src/files.h
+++ b/src/files.h
@@ -93,6 +93,8 @@ public:
 
 class FileReader : public FileReaderBase
 {
+protected:
+	FILE *openfd(const char *filename);
 public:
 	FileReader ();
 	FileReader (const char *filename);