In the article titled “VGSC: A Web-Based Vector Graph Toolkit of Genome Synteny and Collinearity” [1], in Section 2.3. (Output and Result) this URL http://bio.njfu.edu.cn:8080/vgsc-web/static/downloads/vgsc-manual.pdf should be replaced by this URL http://bio.njfu.edu.cn/vgsc-web/static/downloads/vgsc-manual.pdf and in Section 2.4. (Online System), this URL http://bio.njfu.edu.cn:8080/vgsc-web should be replaced by this URL http://bio.njfu.edu.cn/vgsc-web.