diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index dfcd61cdd25aef86f6bb3b0dd320063e940e1d16..b537feedbdb8ab0187f7563cdaa4cc97439d565e 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4302,7 +4302,7 @@
- [a-zA-Z0-9_\-]+
+ [a-zA-Z0-9_\-.]+