diff --git a/backend/database.go b/backend/database.go
index 5cf1571..2ae6ef7 100644
--- a/backend/database.go
+++ b/backend/database.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"github.com/gofrs/uuid"
 	"gopkg.in/mgo.v2"
 	"gopkg.in/mgo.v2/bson"
 	"log"
@@ -95,19 +94,6 @@ func readSpaceurl() []SpaceUrl {
 	c := session.DB(config.MongoDbDatabase).C("spaceurl")
 	result := []SpaceUrl{}
 	c.Find(bson.M{}).Iter().All(&result)
-
-	for _, spaceUrl := range result {
-		if spaceUrl.Id == "" {
-			generatedUuid, err := uuid.NewV4()
-
-			if err != nil {
-				log.Printf("%v", err)
-			}
-			spaceUrl.Id = generatedUuid.String()
-			updateSpaceurl(spaceUrl)
-		}
-	}
-
 	return result
 }
 
diff --git a/frontend/src/components/SpaceApiInput.jsx b/frontend/src/components/SpaceApiInput.jsx
index 4001453..9a2f3ef 100644
--- a/frontend/src/components/SpaceApiInput.jsx
+++ b/frontend/src/components/SpaceApiInput.jsx
@@ -59,7 +59,7 @@ class SpaceApiInput extends React.Component {
       .set('Content-Type', 'application/json')
       .end((err) => {
         if (!err) {
-          this.spaceApiInput.input.value = '';
+          this.spaceApiInput.value = '';
           this.setState({ open: true });
         }
       });
@@ -78,16 +78,16 @@ class SpaceApiInput extends React.Component {
         </p>
         <div style={style.formContainer}>
           <TextField
-            hintText={'https://example.com/yourspaceapi.json'}
+            placeholder={'https://example.com/yourspaceapi.json'}
             name={'spaceapi-input'}
             onChange={this.handleInputChange}
-            ref={ref => (this.spaceApiInput = ref)}
+            inputRef={ref => (this.spaceApiInput = ref)}
             style={{ width: '100%', maxWidth: '340px' }}
           />
           <FloatingActionButton
             style={{ marginLeft: '20px' }}
             mini
-            onTouchTap={this.handleButtonClick}
+            onClick={this.handleButtonClick}
           >
             <ContentAdd />
           </FloatingActionButton>
diff --git a/frontend/src/components/UrlList.jsx b/frontend/src/components/UrlList.jsx
index bc0673f..3d338e0 100644
--- a/frontend/src/components/UrlList.jsx
+++ b/frontend/src/components/UrlList.jsx
@@ -42,7 +42,7 @@ export class UrlList extends React.Component {
   };
 
   deleteSpaceUrl = (spaceUrl) => {
-    this.props.deleteSpaceUrl(spaceUrl.url, this.state.secret);
+    this.props.deleteSpaceUrl(spaceUrl.id, this.state.secret);
   };
 
   render() {
diff --git a/frontend/src/redux/modules/calendar.js b/frontend/src/redux/modules/calendar.js
index 37637cf..edbf1ed 100644
--- a/frontend/src/redux/modules/calendar.js
+++ b/frontend/src/redux/modules/calendar.js
@@ -35,9 +35,6 @@ export const actions = {
   fetchCalendars,
 };
 
-const formatDate = date => (date.format('DD.MM.YYYY'));
-const formatTime = date => (date.format('HH:mm'));
-
 export default handleActions({
   [CALENDARS_FETCHED]: (state, { payload }) => {
     const items = flatten(flatten(
diff --git a/frontend/src/redux/modules/spaceurl.js b/frontend/src/redux/modules/spaceurl.js
index 209524a..c1058b1 100644
--- a/frontend/src/redux/modules/spaceurl.js
+++ b/frontend/src/redux/modules/spaceurl.js
@@ -4,6 +4,7 @@ import { createAction, handleActions } from 'redux-actions';
 import config from '../../api/config';
 
 export const itemStruct = PropTypes.shape({
+  id: PropTypes.string.isRequired,
   url: PropTypes.string.isRequired,
   validated: PropTypes.bool.isRequired,
   lastUpdated: PropTypes.number.isRequired,
@@ -47,14 +48,14 @@ export const validateSpaceUrl = (spaceUrl, secret) => (dispatch) => {
     );
 };
 
-export const deleteSpaceUrl = (spaceUrl, secret) => (dispatch) => {
+export const deleteSpaceUrl = (spaceUrlId, secret) => (dispatch) => {
   request
-    .delete(`${config.api.url}/urls/spaceUrl/${secret}`)
+    .delete(`${config.api.url}/urls/${spaceUrlId}/${secret}`)
     .set('Content-Type', 'application/json')
     .end(
       (err) => {
         if (!err) {
-          dispatch(deleteSpace(spaceUrl));
+          dispatch(deleteSpace(spaceUrlId));
         }
       }
     );
@@ -83,5 +84,5 @@ export default handleActions({
 
     return newState;
   },
-  [SPACEURL_DELETE]: (state, { payload }) => state.items.filter(ele => ele.url != payload.url),
+  [SPACEURL_DELETE]: (state, { payload }) => state.items.filter(ele => ele.id !== payload),
 }, { items: [] });