diff --git a/src/lib/dialog/dialog-config.ts b/src/lib/dialog/dialog-config.ts
index 9602bba4530c..73c5a5e9b73f 100644
--- a/src/lib/dialog/dialog-config.ts
+++ b/src/lib/dialog/dialog-config.ts
@@ -56,7 +56,7 @@ export class MatDialogConfig<D = any> {
   /** Custom class for the backdrop, */
   backdropClass?: string = '';
 
-  /** Whether the user can use escape or clicking outside to close a modal. */
+  /** Whether the user can use escape or clicking on the backdrop to close the modal. */
   disableClose?: boolean = false;
 
   /** Width of the dialog. */