diff --git a/index.html b/index.html
index 62f32ba..fc78726 100644
--- a/index.html
+++ b/index.html
@@ -22,7 +22,7 @@ <h2 class="project-tagline">A Software Framework for Database-Integrated Genome
       <a href="./website/user-guide/user-guide.html" class="btn">Manual</a>
       <a href="https://github.com/giffordlabcvr/DIGS-tool/zipball/master" class="btn">Download</a>
       <a target="_blank" href="https://github.com/giffordlabcvr/DIGS-tool" class="btn">GitHub</a>
-      <a target="blank" href="https://twitter.com/DigsTool" class="btn">Twitter</a>
+      <a target="_blank" href="https://twitter.com/DigsTool" class="btn">Twitter</a>
       
     </section>
 
diff --git a/website/user-guide/tutorial.html b/website/user-guide/tutorial.html
index e6751bd..1b646ea 100644
--- a/website/user-guide/tutorial.html
+++ b/website/user-guide/tutorial.html
@@ -28,7 +28,7 @@ <h2 class="project-tagline">Database-Integrated Genome Screening</h2>
       <a href="./overview.html" class="btn">DIGS</a>
       <a href="./user-guide.html" class="btn">Manual</a>
       <a href="https://github.com/giffordlabcvr/DIGS-tool/zipball/master" class="btn">Download</a>
-      <a target="_blank"  href="https://github.com/giffordlabcvr/DIGS-tool" class="btn">GitHub</a>
+      <a target="_blank" href="https://github.com/giffordlabcvr/DIGS-tool" class="btn">GitHub</a>
       <a target="_blank" href="https://twitter.com/DigsTool" class="btn">Twitter</a>
 
     </section>