diff --git a/src/material/core/datetime/date-adapter.ts b/src/material/core/datetime/date-adapter.ts
index 8fb3d8207309..fe74b4a70399 100644
--- a/src/material/core/datetime/date-adapter.ts
+++ b/src/material/core/datetime/date-adapter.ts
@@ -107,7 +107,7 @@ export abstract class DateAdapter<D, L = any> {
    * @param year The full year of the date. (e.g. 89 means the year 89, not the year 1989).
    * @param month The month of the date (0-indexed, 0 = January). Must be an integer 0 - 11.
    * @param date The date of month of the date. Must be an integer 1 - length of the given month.
-   * @returns The new date, or null if invalid.
+   * @returns The new date.
    */
   abstract createDate(year: number, month: number, date: number): D;