diff --git a/src/driver/core/SideBar.js b/src/driver/core/SideBar.js
index 39f17cc..6f49333 100644
--- a/src/driver/core/SideBar.js
+++ b/src/driver/core/SideBar.js
@@ -17,7 +17,7 @@ const init = dispatch => async () => {
     const metaData = URLHelper.parse()
     if (DOMHelper.isInCodePage()) {
       detectedBranchName = DOMHelper.getCurrentBranch() // not working well with non-branch blob
-        || URLHelper.parseBlobSHA() // cannot handle '/' split branch name, should not use when possibly on branch page
+        || URLHelper.parseSHA() // cannot handle '/' split branch name, should not use when possibly on branch page
     }
     metaData.branchName = detectedBranchName || 'master'
     dispatch(setMetaData, metaData)
diff --git a/src/utils/URLHelper.js b/src/utils/URLHelper.js
index a5d7e8a..ca00ffa 100644
--- a/src/utils/URLHelper.js
+++ b/src/utils/URLHelper.js
@@ -18,9 +18,9 @@ function parse() {
   }
 }
 
-function parseBlobSHA() {
+function parseSHA() {
   const { type, path } = parse()
-  return type === 'blob' ? path[0] : false
+  return (type === 'blob' || type === 'tree') ? path[0] : false
 }
 
 function isInRepoPage() {
@@ -81,5 +81,5 @@ export default {
   isInRepoPage,
   isInCodePage,
   parse,
-  parseBlobSHA,
+  parseSHA,
 }