diff --git a/SUMMARY.md b/SUMMARY.md
index 986bd1c..4562413 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -24,4 +24,4 @@
 * [第36天, EIGRP](d36-EIGRP.md)
 * [第37天，EIGRP故障排除](d37-Troubleshooting-EIGRP.md)
 * [第38天，IPv6下的EIGRP](d38-EIGRP-For-IPv6.md)
-# [第39天，开放最短路径优先协议](d39-OSPF.md)
+* [第39天，开放最短路径优先协议](d39-OSPF.md)