diff --git a/types/office-js-preview/index.d.ts b/types/office-js-preview/index.d.ts
index cf865e7666e5ba..527056a233473c 100644
--- a/types/office-js-preview/index.d.ts
+++ b/types/office-js-preview/index.d.ts
@@ -8614,12 +8614,12 @@ declare namespace Office {
          *
          * - **Web (Word)**: 330 px
          *
-         * - **Windows**: 51 px
+         * - **Windows, Mac**: 51 px
          *
          * If you pass a width beyond the minimum and maximum constraints, the task pane isn't resized and no error is shown.
          *
          * @param width The width of a task pane in pixels. The minimum and maximum constraints vary by platform. In Excel on the web, the width must be between
-         *              350 and 500 px (inclusive). In Word on the web, the width must be between 330 and 500 px (inclusive). In Office on Windows, the width
+         *              350 and 500 px (inclusive). In Word on the web, the width must be between 330 and 500 px (inclusive). In Office on Windows and on Mac, the width
          *              must be between 51 px and 50% of the client window.
          */
         setWidth(width: number): void;
diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index a34f773fd2a703..3cc34e1c599a0d 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -8604,12 +8604,12 @@ declare namespace Office {
          *
          * - **Web (Word)**: 330 px
          *
-         * - **Windows**: 51 px
+         * - **Windows, Mac**: 51 px
          *
          * If you pass a width beyond the minimum and maximum constraints, the task pane isn't resized and no error is shown.
          *
          * @param width The width of a task pane in pixels. The minimum and maximum constraints vary by platform. In Excel on the web, the width must be between
-         *              350 and 500 px (inclusive). In Word on the web, the width must be between 330 and 500 px (inclusive). In Office on Windows, the width
+         *              350 and 500 px (inclusive). In Word on the web, the width must be between 330 and 500 px (inclusive). In Office on Windows and on Mac, the width
          *              must be between 51 px and 50% of the client window.
          */
         setWidth(width: number): void;