diff --git a/js/components/EqualizerWindow.jsx b/js/components/EqualizerWindow.jsx
index c66247ce..c4e26e31 100644
--- a/js/components/EqualizerWindow.jsx
+++ b/js/components/EqualizerWindow.jsx
@@ -2,7 +2,7 @@ import React from 'react';
 import {connect} from 'react-redux';
 import classnames from 'classnames';
 
-import {BANDS} from '../constants';
+import {BANDS, WINDOWS} from '../constants';
 import {setEqBand, setPreamp} from '../actionCreators';
 
 import DraggableWindow from './DraggableWindow.jsx';
@@ -26,7 +26,7 @@ class EqualizerWindow extends React.Component {
   }
 
   handleClick() {
-    this.props.dispatch({type: 'SET_FOCUSED_WINDOW', window: 'EQUALIZER'});
+    this.props.dispatch({type: 'SET_FOCUSED_WINDOW', window: WINDOWS.EQUALIZER});
   }
 
   setHertzValue(hertz) {
@@ -48,7 +48,7 @@ class EqualizerWindow extends React.Component {
 
     const className = classnames({
       window: true,
-      selected: this.props.windows.focused === 'EQUALIZER',
+      selected: this.props.windows.focused === WINDOWS.EQUALIZER,
       doubled
     });
     return <DraggableWindow handleClass='title-bar'>
diff --git a/js/components/MainWindow.jsx b/js/components/MainWindow.jsx
index 54268925..8fedb7f9 100644
--- a/js/components/MainWindow.jsx
+++ b/js/components/MainWindow.jsx
@@ -2,6 +2,8 @@ import React from 'react';
 import {connect} from 'react-redux';
 import classnames from 'classnames';
 
+import {WINDOWS} from '../constants';
+
 import ActionButtons from './ActionButtons.jsx';
 import Balance from './Balance.jsx';
 import Close from './Close.jsx';
@@ -32,7 +34,7 @@ class MainWindow extends React.Component {
   }
 
   handleClick() {
-    this.props.dispatch({type: 'SET_FOCUSED_WINDOW', window: 'MAIN'});
+    this.props.dispatch({type: 'SET_FOCUSED_WINDOW', window: WINDOWS.MAIN});
   }
 
   render() {
@@ -45,7 +47,7 @@ class MainWindow extends React.Component {
       play: status === 'PLAYING',
       stop: status === 'STOPPED',
       pause: status === 'PAUSED',
-      selected: this.props.windows.focused === 'MAIN',
+      selected: this.props.windows.focused === WINDOWS.MAIN,
       loading,
       doubled,
       llama,
diff --git a/js/constants.js b/js/constants.js
index 1b073e10..42b74af4 100644
--- a/js/constants.js
+++ b/js/constants.js
@@ -10,3 +10,9 @@ export const BANDS = [
   14000,
   16000
 ];
+
+export const WINDOWS = {
+  MAIN: 'MAIN',
+  PLAYLIST: 'PLAYLIST',
+  EQUALIZER: 'EQUALIZER'
+};
diff --git a/js/reducers.js b/js/reducers.js
index 1c53dbf4..064fd7cb 100644
--- a/js/reducers.js
+++ b/js/reducers.js
@@ -1,6 +1,6 @@
 import {combineReducers} from 'redux';
 
-import {BANDS} from './constants';
+import {BANDS, WINDOWS} from './constants';
 
 const userInput = (state, action) => {
   if (!state) {
@@ -24,7 +24,7 @@ const userInput = (state, action) => {
 const windows = (state, action) => {
   if (!state) {
     return {
-      focused: 'MAIN'
+      focused: WINDOWS.MAIN
     };
   }
   switch (action.type) {