diff --git a/src/de/inetsoftware/jwebassembly/WasmException.java b/src/de/inetsoftware/jwebassembly/WasmException.java
index e30805c..921b383 100644
--- a/src/de/inetsoftware/jwebassembly/WasmException.java
+++ b/src/de/inetsoftware/jwebassembly/WasmException.java
@@ -21,7 +21,7 @@ package de.inetsoftware.jwebassembly;
  * @author Volker Berlin
  *
  */
-public class WasmException extends Exception {
+public class WasmException extends RuntimeException {
 
     private int    lineNumber;