diff --git a/src/components/TextInput/TextInput.js b/src/components/TextInput/TextInput.js
index b5a20f075b..3f5df28a17 100644
--- a/src/components/TextInput/TextInput.js
+++ b/src/components/TextInput/TextInput.js
@@ -7,7 +7,7 @@ import { polyfill } from 'react-lifecycles-compat';
 import TextInputOutlined from './TextInputOutlined';
 import TextInputFlat from './TextInputFlat';
 import { withTheme } from '../../core/theming';
-import type { Props } from './types';
+import type { Props, RenderProps } from './types';
 
 type TextInputProps = {|
   ...Props,
@@ -78,7 +78,7 @@ class TextInput extends React.Component<TextInputProps, State> {
     error: false,
     multiline: false,
     editable: true,
-    render: props => <NativeTextInput {...props} />,
+    render: (props: RenderProps) => <NativeTextInput {...props} />,
   };
 
   render() {
diff --git a/src/components/TextInput/TextInputFlat.js b/src/components/TextInput/TextInputFlat.js
index 453f97c6cc..8440d2e432 100644
--- a/src/components/TextInput/TextInputFlat.js
+++ b/src/components/TextInput/TextInputFlat.js
@@ -325,7 +325,6 @@ class TextInputFlat extends React.Component<Props, State> {
 
     return (
       <View style={[containerStyle, style]}>
-        {/* When mode === 'flat', render an underline */}
         <Animated.View
           style={[
             styles.underline,
diff --git a/src/components/TextInput/TextInputOutlined.js b/src/components/TextInput/TextInputOutlined.js
index c684e9d530..7bf02442af 100644
--- a/src/components/TextInput/TextInputOutlined.js
+++ b/src/components/TextInput/TextInputOutlined.js
@@ -333,7 +333,7 @@ class TextInputOutlined extends React.Component<Props, State> {
         />
 
         {label ? (
-          // When mode == 'outlined', the input label stays on top of the outline
+          // The input label stays on top of the outline
           // The background of the label covers the outline so it looks cut off
           // To achieve the effect, we position the actual label with a background on top of it
           // We set the color of the text to transparent so only the background is visible