diff --git a/test/writer.jats b/test/writer.jats
index 3cb5050c2..6f808e109 100644
--- a/test/writer.jats
+++ b/test/writer.jats
@@ -1085,7 +1085,7 @@ These should not be escaped: \$ \\ \> \[ \{
Here’s some display math:
- ddxf(x)=limh→0f(x+h)−f(x)h
+ ddxf(x)=limh→0f(x+h)−f(x)h