diff --git a/src/common/InputHandler.ts b/src/common/InputHandler.ts
index 0b284d8e76..d4f2159f5b 100644
--- a/src/common/InputHandler.ts
+++ b/src/common/InputHandler.ts
@@ -2360,7 +2360,7 @@ export class InputHandler extends Disposable implements IInputHandler {
    * | 1         | Bold. (also see `options.drawBoldTextInBrightColors`)    | #Y      |
    * | 2         | Faint, decreased intensity.                              | #Y      |
    * | 3         | Italic.                                                  | #Y      |
-   * | 4         | Underlined (see below for style support).                | #Y      |
+   * | 4         | Underlined (see below for style support).                | #P[Support in DOM and Canvas renderers, not WebGL] |
    * | 5         | Slowly blinking.                                         | #N      |
    * | 6         | Rapidly blinking.                                        | #N      |
    * | 7         | Inverse. Flips foreground and background color.          | #Y      |