diff --git a/lib/doc/Intro.lyx b/lib/doc/Intro.lyx
index 42cb3ff36d..395e2522b8 100644
--- a/lib/doc/Intro.lyx
+++ b/lib/doc/Intro.lyx
@@ -861,7 +861,7 @@ Navigate
 \begin_layout Standard
 In the printed manuals, all cross-references appear as the actual numbers
  for a chapter, section, subsection, and so on.
- In the LyX-file, however, all cross-references appear as a light-grey box
+ In the LyX-file, however, all cross-references appear as a light-grey boxes
  like the following: 
 \begin_inset Graphics
 	filename clipart/referenceQt4.png
@@ -870,7 +870,7 @@ In the printed manuals, all cross-references appear as the actual numbers
 \end_inset
 
 .
- If you click on that box with the left mouse button, a dialog box will
+ If you click on such a box with the left mouse button, a dialog box will
  appear containing a list of all the cross-references in the document.
  You can go to the referenced section by right-clicking on the box or by
  clicking the button