diff --git a/src/net/sourceforge/plantuml/core/DiagramType.java b/src/net/sourceforge/plantuml/core/DiagramType.java
index b01603de0..0105cbd83 100644
--- a/src/net/sourceforge/plantuml/core/DiagramType.java
+++ b/src/net/sourceforge/plantuml/core/DiagramType.java
@@ -5,12 +5,12 @@
  * (C) Copyright 2009-2024, Arnaud Roques
  *
  * Project Info:  https://plantuml.com
- * 
+ *
  * If you like this project or if you find it useful, you can support us at:
- * 
+ *
  * https://plantuml.com/patreon (only 1$ per month!)
  * https://plantuml.com/paypal
- * 
+ *
  * This file is part of PlantUML.
  *
  * PlantUML is free software; you can redistribute it and/or modify it
@@ -127,8 +127,11 @@ public enum DiagramType {
 		if (StartUtils.startsWithSymbolAnd("startfiles", s))
 			return FILES;
 
+		if (StartUtils.startsWithSymbolAnd("startchronology", s))
+			return CHRONOLOGY;
+
 		if (StartUtils.startsWithSymbolAnd("startchen", s))
-				return CHEN_EER;
+			return CHEN_EER;
 
 		return UNKNOWN;
 	}