diff --git a/src/net/sourceforge/plantuml/nwdiag/CommandElement.java b/src/net/sourceforge/plantuml/nwdiag/CommandElement.java
index 566a5c3e6..329c8edfa 100644
--- a/src/net/sourceforge/plantuml/nwdiag/CommandElement.java
+++ b/src/net/sourceforge/plantuml/nwdiag/CommandElement.java
@@ -52,7 +52,7 @@ public class CommandElement extends SingleLineCommand2<NwDiagram> {
 	static IRegex getRegexConcat() {
 		return RegexConcat.build(CommandElement.class.getName(), RegexLeaf.start(), //
 				RegexLeaf.spaceZeroOrMore(), //
-				new RegexLeaf("NAME", "([%pLN_]+)"), //
+				new RegexLeaf("NAME", "([-.%pLN_]+)"), //
 				RegexLeaf.spaceZeroOrMore(), //
 				new RegexLeaf("DEFINITION", "(\\[(.*)\\])?"), //
 				new RegexLeaf(";?"), RegexLeaf.end());