diff --git a/monkey_island/cc/ui/src/components/pages/ConfigurePage.js b/monkey_island/cc/ui/src/components/pages/ConfigurePage.js
index 9bb4c4eeb..ff7b91c5a 100644
--- a/monkey_island/cc/ui/src/components/pages/ConfigurePage.js
+++ b/monkey_island/cc/ui/src/components/pages/ConfigurePage.js
@@ -98,8 +98,8 @@ class ConfigurePageComponent extends React.Component {
   render() {
     let displayedSchema = {};
     if (this.state.schema.hasOwnProperty('properties')) {
-      displayedSchema = this.state.schema["properties"][this.state.selectedSection];
-      displayedSchema["definitions"] = this.state.schema["definitions"];
+      displayedSchema = this.state.schema['properties'][this.state.selectedSection];
+      displayedSchema['definitions'] = this.state.schema['definitions'];
     }
 
     return (
diff --git a/monkey_island/cc/ui/src/components/pages/MapPage.js b/monkey_island/cc/ui/src/components/pages/MapPage.js
index 2a2243389..e597ea97f 100644
--- a/monkey_island/cc/ui/src/components/pages/MapPage.js
+++ b/monkey_island/cc/ui/src/components/pages/MapPage.js
@@ -54,16 +54,12 @@ class MapPageComponent extends React.Component {
     switch (group) {
       case 'exploited':
         return '#c00';
-        break;
       case 'tunnel':
         return '#aaa';
-        break;
       case 'scan':
         return '#f90';
-        break;
       case 'island':
         return '#aaa';
-        break;
     }
     return 'black';
   }
@@ -113,12 +109,12 @@ class MapPageComponent extends React.Component {
       console.log('selection cleared.'); // eslint-disable-line no-console
       this.setState({selected: null, selectedType: null});
     }
-  };
+  }
 
   killAllMonkeys = () => {
     fetch('/api?action=killall')
       .then(res => res.json())
-      .then(res => this.setState({killPressed: (res.status==="OK")}));
+      .then(res => this.setState({killPressed: (res.status === 'OK')}));
   };
 
   render() {
diff --git a/monkey_island/cc/ui/src/components/pages/ReportPage.js b/monkey_island/cc/ui/src/components/pages/ReportPage.js
index 91f21a2bd..31fdc2965 100644
--- a/monkey_island/cc/ui/src/components/pages/ReportPage.js
+++ b/monkey_island/cc/ui/src/components/pages/ReportPage.js
@@ -1,6 +1,5 @@
 import React from 'react';
 import {Col} from 'react-bootstrap';
-import {Link} from 'react-router-dom';
 
 class ReportPageComponent extends React.Component {
   constructor(props) {
diff --git a/monkey_island/cc/ui/src/components/pages/RunMonkeyPage.js b/monkey_island/cc/ui/src/components/pages/RunMonkeyPage.js
index c9934d619..3c20a1d77 100644
--- a/monkey_island/cc/ui/src/components/pages/RunMonkeyPage.js
+++ b/monkey_island/cc/ui/src/components/pages/RunMonkeyPage.js
@@ -2,7 +2,7 @@ import React from 'react';
 import {Button, Col, Well, Nav, NavItem} from 'react-bootstrap';
 import CopyToClipboard from 'react-copy-to-clipboard';
 import {Icon} from 'react-fa';
-import {Link} from "react-router-dom";
+import {Link} from 'react-router-dom';
 
 class RunMonkeyPageComponent extends React.Component {
 
@@ -11,9 +11,9 @@ class RunMonkeyPageComponent extends React.Component {
     this.state = {
       ips: [],
       selectedIp: '0.0.0.0',
-      runningOnIslandState: "not_running",
-      runningOnClientState: "not_running",
-      selectedSection: "windows-32"
+      runningOnIslandState: 'not_running',
+      runningOnClientState: 'not_running',
+      selectedSection: 'windows-32'
     };
   }
 
@@ -28,9 +28,9 @@ class RunMonkeyPageComponent extends React.Component {
       .then(res => res.json())
       .then(res =>{
         if (res['is_running']) {
-          this.setState({runningOnIslandState: "running"});
+          this.setState({runningOnIslandState: 'running'});
         } else {
-          this.setState({runningOnIslandState: "not_running"});
+          this.setState({runningOnIslandState: 'not_running'});
         }
       });
 
@@ -38,9 +38,9 @@ class RunMonkeyPageComponent extends React.Component {
       .then(res => res.json())
       .then(res => {
         if (res['is_running']) {
-          this.setState({runningOnClientState: "running"});
+          this.setState({runningOnClientState: 'running'});
         } else {
-          this.setState({runningOnClientState: "not_running"});
+          this.setState({runningOnClientState: 'not_running'});
         }
       });
 
@@ -68,11 +68,11 @@ class RunMonkeyPageComponent extends React.Component {
       .then(res => {
         if (res['is_running']) {
           this.setState({
-            runningOnIslandState: "installing"
+            runningOnIslandState: 'installing'
           });
         } else {
           this.setState({
-            runningOnIslandState: "not_running"
+            runningOnIslandState: 'not_running'
           });
         }
 
@@ -81,9 +81,9 @@ class RunMonkeyPageComponent extends React.Component {
   };
 
   generateCmdDiv(ip) {
-    let isLinux = (this.state.selectedSection.split('-')[0] === "linux");
-    let is32Bit = (this.state.selectedSection.split('-')[1] === "32");
-    let cmdText = "";
+    let isLinux = (this.state.selectedSection.split('-')[0] === 'linux');
+    let is32Bit = (this.state.selectedSection.split('-')[1] === '32');
+    let cmdText = '';
     if (isLinux) {
       cmdText = this.generateLinuxCmd(ip, is32Bit);
     } else {
@@ -110,9 +110,9 @@ class RunMonkeyPageComponent extends React.Component {
   };
 
   renderIconByState(state) {
-    if (state === "running") {
+    if (state === 'running') {
       return <Icon name="check" className="text-success" style={{'marginLeft': '5px'}}/>
-    } else if (state == "installing") {
+    } else if (state == 'installing') {
       return <Icon name="refresh" className="text-success" style={{'marginLeft': '5px'}}/>
     } else {
       return '';
@@ -130,13 +130,13 @@ class RunMonkeyPageComponent extends React.Component {
         <p style={{'marginBottom': '2em'}}>
           <button onClick={this.runLocalMonkey}
                   className="btn btn-default"
-                  disabled={this.state.runningOnIslandState !== "not_running"}>
+                  disabled={this.state.runningOnIslandState !== 'not_running'}>
             Run on C&C Server
             { this.renderIconByState(this.state.runningOnIslandState) }
           </button>
-          <a href="/download-monkey"
+          <a
              className="btn btn-default"
-             disabled={this.state.runningOnClientState !== "not_running"}
+             disabled={this.state.runningOnClientState !== 'not_running'}
              style={{'marginLeft': '1em'}}>
             Download and run locally
             { this.renderIconByState(this.state.runningOnClientState) }
diff --git a/monkey_island/cc/ui/src/components/pages/StartOverPage.js b/monkey_island/cc/ui/src/components/pages/StartOverPage.js
index 20271a6b4..26b404137 100644
--- a/monkey_island/cc/ui/src/components/pages/StartOverPage.js
+++ b/monkey_island/cc/ui/src/components/pages/StartOverPage.js
@@ -48,7 +48,7 @@ class StartOverPageComponent extends React.Component {
     fetch('/api?action=reset')
       .then(res => res.json())
       .then(res => {
-        if (res["status"] == "OK") {
+        if (res['status'] === 'OK') {
           this.setState({
               cleaned: true
             });
diff --git a/monkey_island/cc/ui/src/components/preview-pane/PreviewPane.js b/monkey_island/cc/ui/src/components/preview-pane/PreviewPane.js
index 8fe0ba8b2..d7215746d 100644
--- a/monkey_island/cc/ui/src/components/preview-pane/PreviewPane.js
+++ b/monkey_island/cc/ui/src/components/preview-pane/PreviewPane.js
@@ -1,5 +1,5 @@
 import React from 'react';
-import {Icon} from "react-fa";
+import {Icon} from 'react-fa';
 
 class PreviewPaneComponent extends React.Component {
 
@@ -58,6 +58,10 @@ class PreviewPaneComponent extends React.Component {
   }
 
   exploitsTimeline(asset) {
+    if (asset.exploits.length === 0) {
+      return (<div />);
+    }
+
     return (
       <div>
         <h4 style={{'marginTop': '2em'}}>Timeline</h4>