diff --git a/source/ui.py b/source/ui.py
index 6bcab338289..74720c9bbeb 100644
--- a/source/ui.py
+++ b/source/ui.py
@@ -106,10 +106,16 @@ def reportTextCopiedToClipboard(text: Optional[str] = None):
 		# or the clipboard content did not match what was just copied.
 		message(_("Unable to copy"))
 		return
+	# Depending on the speech synthesizer, large amount of spoken text can freeze NVDA (#11843)
+	if len(text) < 1024:
+		spokenText = text
+	else:
+		# Translators: Spoken instead of a lengthy text when copied to clipboard.
+		spokenText = _("%d characters") % len(text)
 	message(
 		# Translators: Announced when a text has been copied to clipboard.
 		# {text} is replaced by the copied text.
-		text=_("Copied to clipboard: {text}").format(text=text),
+		text=_("Copied to clipboard: {text}").format(text=spokenText),
 		# Translators: Displayed in braille when a text has been copied to clipboard.
 		# {text} is replaced by the copied text.
 		brailleText=_("Copied: {text}").format(text=text)