diff --git a/scm-ui/src/repos/sources/components/FileTree.js b/scm-ui/src/repos/sources/components/FileTree.js
index ed28652adf..02aa22f942 100644
--- a/scm-ui/src/repos/sources/components/FileTree.js
+++ b/scm-ui/src/repos/sources/components/FileTree.js
@@ -117,9 +117,9 @@ class FileTree extends React.Component<Props> {
 
     let baseUrlWithRevision = baseUrl;
     if (revision) {
-      baseUrlWithRevision += "/" + revision;
+      baseUrlWithRevision += "/" + encodeURIComponent(revision);
     } else {
-      baseUrlWithRevision += "/" + tree.revision;
+      baseUrlWithRevision += "/" + encodeURIComponent(tree.revision);
     }
 
     return (