diff --git a/app/assets/javascripts/admin/models/report.js.es6 b/app/assets/javascripts/admin/models/report.js.es6
index 4905bc8a99e..86281929ae0 100644
--- a/app/assets/javascripts/admin/models/report.js.es6
+++ b/app/assets/javascripts/admin/models/report.js.es6
@@ -143,7 +143,7 @@ const Report = Discourse.Model.extend({
   @computed('data')
   xAxisIsDate() {
     if (!this.data[0]) return false;
-    return this.data && moment(this.data[0].x, 'YYYY-MM-DD').isValid();
+    return this.data && this.data[0].x.match(/\d{4}-\d{1,2}-\d{1,2}/);
   }
 
 });