diff --git a/libretro-common/file/config_file.c b/libretro-common/file/config_file.c
index 049358d7e4..78c5c12919 100644
--- a/libretro-common/file/config_file.c
+++ b/libretro-common/file/config_file.c
@@ -907,7 +907,11 @@ bool config_file_write(config_file_t *conf, const char *path)
       file = fopen(path, "w");
       if (!file)
          return false;
+#ifdef WIIU
+      setvbuf(file, NULL, _IONBF, 0x4000);
+#else
       setvbuf(file, NULL, _IOFBF, 0x4000);
+#endif
    }
    else
       file = stdout;