diff --git a/packages/material-ui/src/ListItemText/ListItemText.d.ts b/packages/material-ui/src/ListItemText/ListItemText.d.ts
index b42832fb37045c..9d5c98b9ee0b57 100644
--- a/packages/material-ui/src/ListItemText/ListItemText.d.ts
+++ b/packages/material-ui/src/ListItemText/ListItemText.d.ts
@@ -6,14 +6,42 @@ export interface ListItemTextProps<
   PrimaryTypographyComponent extends React.ElementType = 'span',
   SecondaryTypographyComponent extends React.ElementType = 'p'
 > extends StandardProps<React.HTMLAttributes<HTMLDivElement>, ListItemTextClassKey> {
+  /**
+   * Alias for the `primary` property.
+   */
+  children?: React.ReactNode;
+  /**
+   * If `true`, the children won't be wrapped by a Typography component.
+   * This can be useful to render an alternative Typography variant by wrapping
+   * the `children` (or `primary`) text, and optional `secondary` text
+   * with the Typography component.
+   */
   disableTypography?: boolean;
+  /**
+   * If `true`, the children will be indented.
+   * This should be used if there is no left avatar or left icon.
+   */
   inset?: boolean;
+  /**
+   * The main content element.
+   */
   primary?: React.ReactNode;
+  /**
+   * These props will be forwarded to the primary typography component
+   * (as long as disableTypography is not `true`).
+   */
   primaryTypographyProps?: TypographyProps<
     PrimaryTypographyComponent,
     { component?: PrimaryTypographyComponent }
   >;
+  /**
+   * The secondary content element.
+   */
   secondary?: React.ReactNode;
+  /**
+   * These props will be forwarded to the secondary typography component
+   * (as long as disableTypography is not `true`).
+   */
   secondaryTypographyProps?: TypographyProps<
     SecondaryTypographyComponent,
     { component?: SecondaryTypographyComponent }
@@ -28,14 +56,7 @@ export type ListItemTextClassKey =
   | 'primary'
   | 'secondary';
 
-// If use function instead const, yarn proptypes (scripts/generateProptypes.ts) will overwrite ListItemText.js with proptypes from current file.
-// const declarations are ignored.
-/* tslint:disable:prefer-declare-function */
-declare const ListItemText: <
+export default function ListItemText<
   PrimaryTypographyComponent extends React.ElementType = 'span',
   SecondaryTypographyComponent extends React.ElementType = 'p'
->(
-  props: ListItemTextProps<PrimaryTypographyComponent, SecondaryTypographyComponent>,
-) => JSX.Element;
-
-export default ListItemText;
+>(props: ListItemTextProps<PrimaryTypographyComponent, SecondaryTypographyComponent>): JSX.Element;
diff --git a/packages/material-ui/src/ListItemText/ListItemText.js b/packages/material-ui/src/ListItemText/ListItemText.js
index f826e7c5578af1..244b7fabaf2d9c 100644
--- a/packages/material-ui/src/ListItemText/ListItemText.js
+++ b/packages/material-ui/src/ListItemText/ListItemText.js
@@ -96,6 +96,10 @@ const ListItemText = React.forwardRef(function ListItemText(props, ref) {
 });
 
 ListItemText.propTypes = {
+  // ----------------------------- Warning --------------------------------
+  // | These PropTypes are generated from the TypeScript type definitions |
+  // |     To update them edit the d.ts file and run "yarn proptypes"     |
+  // ----------------------------------------------------------------------
   /**
    * Alias for the `primary` property.
    */
@@ -104,7 +108,7 @@ ListItemText.propTypes = {
    * Override or extend the styles applied to the component.
    * See [CSS API](#css) below for more details.
    */
-  classes: PropTypes.object.isRequired,
+  classes: PropTypes.object,
   /**
    * @ignore
    */