Fix #2134
diff --git a/web/src/js/components/EventLog.jsx b/web/src/js/components/EventLog.jsx
index 1a44951151..3e0430db66 100644
--- a/web/src/js/components/EventLog.jsx
+++ b/web/src/js/components/EventLog.jsx
@@ -55,7 +55,7 @@ class EventLog extends Component {
                 <div onMouseDown={this.onDragStart}>
                     Eventlog
                     <div className="pull-right">
-                        {['debug', 'info', 'web'].map(type => (
+                        {['debug', 'info', 'web', 'warn', 'error'].map(type => (
                             <ToggleButton key={type} text={type} checked={filters[type]} onToggle={() => toggleFilter(type)}/>
                         ))}
                         <i onClick={close} className="fa fa-close"></i>
diff --git a/web/src/js/components/EventLog/EventList.jsx b/web/src/js/components/EventLog/EventList.jsx
index d0b036e7c5..14f2b5b252 100644
--- a/web/src/js/components/EventLog/EventList.jsx
+++ b/web/src/js/components/EventLog/EventList.jsx
@@ -83,7 +83,12 @@ class EventLogList extends Component {
 }
 
 function LogIcon({ event }) {
-    const icon = { web: 'html5', debug: 'bug' }[event.level] || 'info'
+    const icon = {
+      web: 'html5',
+      debug: 'bug',
+      warn: 'exclamation-triangle',
+      error: 'ban'
+    }[event.level] || 'info'
     return <i className={`fa fa-fw fa-${icon}`}></i>
 }
 
diff --git a/web/src/js/ducks/eventLog.js b/web/src/js/ducks/eventLog.js
index 73eaf2e89b..8f9ec34d7a 100644
--- a/web/src/js/ducks/eventLog.js
+++ b/web/src/js/ducks/eventLog.js
@@ -8,7 +8,7 @@ export const TOGGLE_FILTER     = 'EVENTS_TOGGLE_FILTER'
 
 const defaultState = {
     visible: false,
-    filters: { debug: false, info: true, web: true },
+    filters: { debug: false, info: true, web: true, warn: true, error: true },
     ...reduceStore(undefined, {}),
 }
 

I picked the shape of icon and added toggle buttons for error and warn.

![2017-03-18 9 47 10](https://cloud.githubusercontent.com/assets/17471430/24067525/6fc169aa-0bc1-11e7-9a24-e94d21d9a6fa.png)
![2017-03-18 9 47 17](https://cloud.githubusercontent.com/assets/17471430/24067524/6f9fd402-0bc1-11e7-8f1d-e5ee2ec58900.png)
![2017-03-18 9 47 23](https://cloud.githubusercontent.com/assets/17471430/24067526/6fde2c16-0bc1-11e7-9d0b-6722d3570870.png)
