diff --git a/src/ini.cpp b/src/ini.cpp
--- a/src/ini.cpp
+++ b/src/ini.cpp
@@ -111,11 +111,11 @@ bool IniFile::SaveToDisk(const char *fil
 	return true;
 }
 
-/* virtual */ FILE *IniFile::OpenFile(const char *filename, size_t *size)
+/* virtual */ FILE *IniFile::OpenFile(const char *filename, Subdirectory subdir, size_t *size)
 {
 	/* Open the text file in binary mode to prevent end-of-line translations
 	 * done by ftell() and friends, as defined by K&R. */
-	return FioFOpenFile(filename, "rb", BASESET_DIR, size);
+	return FioFOpenFile(filename, "rb", subdir, size);
 }
 
 /* virtual */ void IniFile::ReportFileError(const char * const pre, const char * const buffer, const char * const post)