diff --git a/web/content/docs/tools/fileio/TIN2VTK/index.md b/web/content/docs/tools/fileio/TIN2VTK/index.md
index 2c59244a94afd54fe71ad4f60a4eea1c6fb45a83..f9bc6c50a1f7ff19f5f05fbee74b2bd41ea38d2f 100644
--- a/web/content/docs/tools/fileio/TIN2VTK/index.md
+++ b/web/content/docs/tools/fileio/TIN2VTK/index.md
@@ -8,7 +8,7 @@ author = "Julian Heinze"
 
 This tool converts datasets in TIN-format, usually used in geographic information systems (GIS), into VTK-format.
 The TIN-format stores triangular irregular networks which can be considered a subclass of triangulated 2D meshes.
-VTK stores such irregular networks as unstructured grids in *.vtu-files.
+VTK stores such irregular networks as unstructured grids in `*.vtu`-files.
 
 ## Usage