diff --git a/res/css/views/dialogs/_DevtoolsDialog.scss b/res/css/views/dialogs/_DevtoolsDialog.scss
index 7b4449eee0..8fee740016 100644
--- a/res/css/views/dialogs/_DevtoolsDialog.scss
+++ b/res/css/views/dialogs/_DevtoolsDialog.scss
@@ -244,7 +244,7 @@ limitations under the License.
             white-space: nowrap;
         }
 
-        td+td, th+th {
+        td + td, th + th {
             width: auto;
         }
 
diff --git a/src/components/views/dialogs/DevtoolsDialog.js b/src/components/views/dialogs/DevtoolsDialog.js
index 5b1ed86adb..814378bb51 100644
--- a/src/components/views/dialogs/DevtoolsDialog.js
+++ b/src/components/views/dialogs/DevtoolsDialog.js
@@ -914,7 +914,7 @@ class SettingsExplorer extends React.Component {
     }
 
     renderCanEditLevel(roomId, level) {
-        let canEdit = SettingsStore.canSetValue(this.state.editSetting, roomId, level);
+        const canEdit = SettingsStore.canSetValue(this.state.editSetting, roomId, level);
         const className = canEdit ? 'mx_DevTools_SettingsExplorer_mutable' : 'mx_DevTools_SettingsExplorer_immutable';
         return <td className={className}><code>{canEdit.toString()}</code></td>;
     }