diff --git a/lib/doc/Development.lyx b/lib/doc/Development.lyx
index 0b0f941494..04a337a7cc 100644
--- a/lib/doc/Development.lyx
+++ b/lib/doc/Development.lyx
@@ -2,7 +2,7 @@
 \lyxformat 503
 \begin_document
 \begin_header
-\origin /systemlyxdir/doc
+\origin /systemlyxdir/doc/
 \textclass scrartcl
 \options BCOR8mm,captions=tableheading
 \use_default_options false
@@ -3101,6 +3101,15 @@ development/autotests/filterCheckWarnings
 Under cmake, the tests are labeled as 'load'.
 \end_layout
 
+\begin_layout Subsubsection
+lyx21 tests
+\end_layout
+
+\begin_layout Standard
+These tests combine lyx2lyx tests with check_load tests.
+ They fail if either fails.
+\end_layout
+
 \begin_layout Subsubsection
 URL tests
 \end_layout