Index: src/main/java/org/codehaus/mojo/jalopy/JalopyMojo.java
===================================================================
--- src/main/java/org/codehaus/mojo/jalopy/JalopyMojo.java	(revision 11006)
+++ src/main/java/org/codehaus/mojo/jalopy/JalopyMojo.java	(working copy)
@@ -177,7 +177,11 @@
         }
         catch ( Exception e )
         {
-            e.printStackTrace();
+            if (e instanceof MojoExecutionException) {
+                throw (MojoExecutionException) e;
+            } else {
+                e.printStackTrace();
+            }
         }
     }