diff --git a/source/libfat.c b/source/libfat.c
index a8ce7f9..4c9a3b9 100644
--- a/source/libfat.c
+++ b/source/libfat.c
@@ -66,8 +66,7 @@ static const devoptab_t dotab_fat = {
 	NULL,	/* Device data */
 	NULL,	// chmod_r
 	NULL,	// fchmod_r
-	NULL,	// rmdir_r
-	true	// stdioUnbuffered;
+	NULL	// rmdir_r
 };
 
 bool fatMount (const char* name, const DISC_INTERFACE* interface, sec_t startSector, uint32_t cacheSize, uint32_t SectorsPerPage) {