diff --git a/manual/viewer.rst b/manual/viewer.rst
index 3d64623d89..8697e31421 100644
--- a/manual/viewer.rst
+++ b/manual/viewer.rst
@@ -133,7 +133,7 @@ Copying text and images
 -------------------------
 
 You can select text and images by dragging the content with your mouse and then
-right clicking and selecting "Copy" to copy to the clipboard.  The copied
+right clicking and selecting :guilabel:`Copy` to copy to the clipboard.  The copied
 material can be pasted into another application as plain text and images.