diff --git a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header.js b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header.js
index 84add8a..cb2b8bc 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header.js
+++ b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header.js
@@ -149,7 +149,7 @@
           .then(res => {
             if (res.ok) {
               if (target) { target.disabled = false; }
-              this.set(['_change', 'revisions', sha, 'description'], desc);
+              this.set(['change', 'revisions', sha, 'description'], desc);
               this._patchsetDescription = desc;
             }
           }).catch(err => {
diff --git a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
index a92d783..f7056dc 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
@@ -134,6 +134,7 @@
         // The API stub should be called with an empty string for the new
         // description.
         assert.equal(putDescStub.lastCall.args[2], '');
+        assert.equal(element.change.revisions.rev1.description, '');
 
         flushAsynchronousOperations();
         // The editable label should now be visible and the chip hidden.
@@ -154,6 +155,7 @@
       }).then(() => {
         flushAsynchronousOperations();
         // The chip should be visible again, and the label hidden.
+        assert.equal(element.change.revisions.rev1.description, 'test2');
         assert.equal(getComputedStyle(label).display, 'none');
         assert.notEqual(getComputedStyle(chip).display, 'none');
       });