diff --git a/doc/diagrams.gaphor b/doc/diagrams.gaphor
index c64248d9..c7b05af2 100644
--- a/doc/diagrams.gaphor
+++ b/doc/diagrams.gaphor
@@ -851,7 +851,7 @@
 <val>(1.0, 0.0, 0.0, 1.0, 241.0, 99.0)</val>
 </matrix>
 <orthogonal>
-<val>1</val>
+<val>0</val>
 </orthogonal>
 <horizontal>
 <val>0</val>