diff --git a/js/api.js b/js/api.js
index a8ae841..d3b9b10 100644
--- a/js/api.js
+++ b/js/api.js
@@ -60,7 +60,7 @@ const defaultstate_tournamentinfo = {
     isPublic : '',
     stages: [],
     teams : []
-}
+};
 
 export function postRequest(state, url, data) {
     return axios.post(api_url + url, data, {
@@ -262,7 +262,7 @@ const reducer_tournamentinfo = (state = defaultstate_tournamentinfo, action) =>
             });
             storeOptionalToken(resp);
             action.parameters.successCallback();
-        }).catch((error) => {
+        }).catch(() => {
             action.parameters.errorCallback();
         });
         return Object.assign({}, state, {});
@@ -304,7 +304,7 @@ const reducer_tournamentinfo = (state = defaultstate_tournamentinfo, action) =>
         return Object.assign({}, state, {});
     default: return state;
     }
-}
+};
 
 const reducers = {
     userinfo: reducer_userinfo,
diff --git a/pages/_error.js b/pages/_error.js
index 0383518..c0babdc 100644
--- a/pages/_error.js
+++ b/pages/_error.js
@@ -1,4 +1,5 @@
 import { ErrorPageComponent } from '../js/components/ErrorComponents.js';
+import React from 'react';
 
 import {
     verifyCredentials
diff --git a/pages/tournament-edit.js b/pages/tournament-edit.js
index f778dea..68d3add 100644
--- a/pages/tournament-edit.js
+++ b/pages/tournament-edit.js
@@ -13,7 +13,6 @@ import {
     Button,
     Card,
     CardBody,
-    CardTitle,
     Table
 } from 'reactstrap';
 
@@ -87,8 +86,6 @@ export default connect(
 class EditTournamentContent extends React.Component {
 
     render() {
-        const { code } = this.props;
-
         return (
             <div className='mb-5'>
                 <ReturnToTournamentButton/>
@@ -178,7 +175,7 @@ class EditTournamentForm extends React.Component {
         });
     }
 
-    handleClick(input) {
+    handleClick() {
         // TODO: Apply changes to the tournament properties
     }
 
@@ -272,7 +269,7 @@ class EditTeamNamesForm extends React.Component {
         });
     }
 
-    handleClick(index, input) {
+    handleClick(index) {
         updateTeamName(this.state.teams[index], () => {
             notify.show('Team Name wurde erfolgreich geändert.', 'success', 5000);
         }, () => {