diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
index d3d6010..939b23c 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
@@ -758,7 +758,7 @@
     if (changeReviewers) {
       for (const key of Object.keys(changeReviewers)) {
         if (key !== 'REVIEWER' && key !== 'CC') {
-          console.warn('unexpected reviewer state:', key);
+          this.reporting.error(new Error(`Unexpected reviewer state: ${key}`));
           continue;
         }
         if (!changeReviewers[key]) continue;
@@ -1085,9 +1085,8 @@
       } else if (isReviewerGroupSuggestion(suggestion)) {
         entry = suggestion.group;
       } else {
-        console.warn(
-          'received suggestion that was neither account nor group:',
-          suggestion
+        this.reporting.error(
+          new Error(`Suggestion is neither account nor group: ${suggestion}`)
         );
         return false;
       }