diff --git a/web/src/admin/AdminTranslation.js b/web/src/admin/AdminTranslation.js
index bb1c8a0e..56e0a607 100644
--- a/web/src/admin/AdminTranslation.js
+++ b/web/src/admin/AdminTranslation.js
@@ -319,8 +319,8 @@ class AdminTranslation extends React.Component {
       <div className="problem" onClick={() => this.clearErrorMessage()}>
         {i18next.t("error:Please resolve the following issues before submitting")}
         <ul>
-          {problems.map((problem) => {
-            return <li>{problem}</li>;
+          {problems.map((problem, i) => {
+            return <li key={i}>{problem}</li>;
           })}
         </ul>
       </div>
diff --git a/web/src/main/NewNodeTopicBox.js b/web/src/main/NewNodeTopicBox.js
index da49f9d6..68067068 100644
--- a/web/src/main/NewNodeTopicBox.js
+++ b/web/src/main/NewNodeTopicBox.js
@@ -162,7 +162,7 @@ class NewNodeTopicBox extends React.Component {
         {i18next.t("error:Please resolve the following issues before creating a new topic")}
         <ul>
           {problems.map((problem, i) => {
-            return <li>{problem}</li>;
+            return <li key={i}>{problem}</li>;
           })}
           {this.state.message !== "" ? <li>{i18next.t(`error:${this.state.message}`)}</li> : null}
         </ul>