diff --git a/li.strolch.utils/src/main/java/li/strolch/utils/helper/StringHelper.java b/li.strolch.utils/src/main/java/li/strolch/utils/helper/StringHelper.java
index 4e0a07c45..1bfc45738 100644
--- a/li.strolch.utils/src/main/java/li/strolch/utils/helper/StringHelper.java
+++ b/li.strolch.utils/src/main/java/li/strolch/utils/helper/StringHelper.java
@@ -56,6 +56,10 @@ public class StringHelper {
 			(byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd',
 			(byte) 'e', (byte) 'f' };
 
+	public static String asHexString(byte data) {
+		return String.format("%02x", data);
+	}
+
 	public static String asPrettyHexString(byte[] raw) {
 		try {
 			byte[] hex = new byte[3 * raw.length + (raw.length / 8)];
@@ -81,10 +85,6 @@ public class StringHelper {
 		}
 	}
 
-	public static void main(String[] args) {
-		System.out.println(asPrettyHexString(fromHexString("010000000000040003000000000000c0")));
-	}
-
 	/**
 	 * Converts each byte of the given byte array to a HEX value and returns the concatenation of these values
 	 *