diff --git a/smooth-doc/gatsby-node.js b/smooth-doc/gatsby-node.js
index c90efd9..0e27118 100644
--- a/smooth-doc/gatsby-node.js
+++ b/smooth-doc/gatsby-node.js
@@ -140,7 +140,7 @@ function onCreateMdxNode({ node, getNode, actions }, options) {
       baseDirectory,
       '',
     )
-    return `${repositoryURL}edit/${githubDefaultBranch}${relativePath}`
+    return `${repositoryURL}/edit/${githubDefaultBranch}${relativePath}`
   }
 
   createNodeField({