diff --git a/core/src/main/java/de/srsoftware/umbrella/core/Util.java b/core/src/main/java/de/srsoftware/umbrella/core/Util.java
index ee909fa1..d869a805 100644
--- a/core/src/main/java/de/srsoftware/umbrella/core/Util.java
+++ b/core/src/main/java/de/srsoftware/umbrella/core/Util.java
@@ -35,7 +35,7 @@ import org.json.JSONObject;
 
 public class Util {
 	public static final System.Logger LOG = System.getLogger("Util");
-	private static final Pattern UML_PATTERN = Pattern.compile("@start(\\w+)(.*)@end(\\1)",Pattern.DOTALL);
+	private static final Pattern UML_PATTERN = Pattern.compile("@start(\\w+)(.*?)@end(\\1)",Pattern.DOTALL);
 	private static File plantumlJar = null;
 	private static final JParsedown MARKDOWN = new JParsedown();
 	public static final String SHA1 = "SHA-1";
@@ -79,7 +79,7 @@ public class Util {
 		try {
 			if (plantumlJar != null && plantumlJar.exists()) {
 				var matcher = UML_PATTERN.matcher(source);
-				if (matcher.find()) {
+				while (matcher.find()) {
 					var uml = matcher.group(0).trim();
 					var start = matcher.start(0);
 					var end = matcher.end(0);
@@ -96,6 +96,7 @@ public class Util {
 						byte[] out = is.readAllBytes();
 						var svg = new String(out, UTF_8);
 						source = source.substring(0, start) + svg + source.substring(end);
+						matcher = UML_PATTERN.matcher(source);
 					}
 				}
 			}