diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
index 168ec57..fce9c27 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
@@ -160,10 +160,17 @@
     },
 
     _getChangeDetail(changeNum) {
-      return this.$.restAPI.getDiffChangeDetail(changeNum).then(
-          change => {
-            this._change = change;
-          });
+      return this.$.restAPI.getDiffChangeDetail(changeNum).then(change => {
+        this._change = change;
+        this._upgradeUrl(change, this.params);
+      });
+    },
+
+    _upgradeUrl(change, params) {
+      const project = change.project;
+      if (!params.project || project !== params.project) {
+        Gerrit.Nav.upgradeUrl(Object.assign({}, params, {project}));
+      }
     },
 
     _getFiles(changeNum, patchRangeRecord) {