diff --git a/coatjava/10.1.1/clas12-default.yaml b/coatjava/10.1.1/clas12-default.yaml
index 421476b..1a72c6a 100644
--- a/coatjava/10.1.1/clas12-default.yaml
+++ b/coatjava/10.1.1/clas12-default.yaml
@@ -1,4 +1,4 @@
- YAML file for simulations with nominal/default geometry
+# YAML file for simulations with nominal/default geometry
 # Uses conventional tracking and no denoising
 # Compatible with:
 # - coatjava 9.0.2 or later