diff --git a/src/layers/background.jsx b/src/layers/background.jsx
index 07eeeaac..9b92e449 100644
--- a/src/layers/background.jsx
+++ b/src/layers/background.jsx
@@ -4,6 +4,7 @@ import Input from 'rebass/dist/Input'
 import { PropertyGroup } from '../fields/spec'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
 
+//TODO: All layers contain a lot of redundancy
 export default class BackgroundLayer extends React.Component {
 	static propTypes = {
 		layer: React.PropTypes.instanceOf(Immutable.Map).isRequired,
diff --git a/src/layers/fill.jsx b/src/layers/fill.jsx
index 3b13ca61..f45ce00f 100644
--- a/src/layers/fill.jsx
+++ b/src/layers/fill.jsx
@@ -4,6 +4,7 @@ import { Checkbox, Input } from 'rebass'
 import { PropertyGroup } from '../fields/spec'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
 
+//TODO: All layers contain a lot of redundancy
 export default class FillLayer extends React.Component {
 	static propTypes = {
 		layer: React.PropTypes.instanceOf(Immutable.Map).isRequired,
diff --git a/src/layers/line.jsx b/src/layers/line.jsx
index 61b988b8..d41c2cc2 100644
--- a/src/layers/line.jsx
+++ b/src/layers/line.jsx
@@ -3,6 +3,7 @@ import Immutable from 'immutable'
 import { PropertyGroup } from '../fields/spec'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
 
+//TODO: All layers contain a lot of redundancy
 export default class LineLayer extends React.Component {
 	static propTypes = {
 		layer: React.PropTypes.instanceOf(Immutable.Map).isRequired,
diff --git a/src/layers/symbol.jsx b/src/layers/symbol.jsx
index 8faefb0d..6478b0b6 100644
--- a/src/layers/symbol.jsx
+++ b/src/layers/symbol.jsx
@@ -3,6 +3,7 @@ import Immutable from 'immutable'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
 import { PropertyGroup } from '../fields/spec'
 
+//TODO: All layers contain a lot of redundancy
 export default class SymbolLayer extends React.Component {
 	static propTypes = {
 		layer: React.PropTypes.instanceOf(Immutable.Map).isRequired,