'<init>' is not a valid dir name, so we replace it with 'init'
diff --git a/jspwiki-main/src/test/java/org/apache/wiki/TestEngine.java b/jspwiki-main/src/test/java/org/apache/wiki/TestEngine.java
index 6140d83..e2c3849 100644
--- a/jspwiki-main/src/test/java/org/apache/wiki/TestEngine.java
+++ b/jspwiki-main/src/test/java/org/apache/wiki/TestEngine.java
@@ -439,7 +439,8 @@
         for( final StackTraceElement trace : Thread.currentThread().getStackTrace() ) {
             if( !( trace.getClassName().contains( TestEngine.class.getSimpleName() ) ||
                    trace.getClassName().contains( Thread.class.getSimpleName() ) ) ) {
-                return trace.getClassName() + "-" + trace.getMethodName();
+                return trace.getClassName() + "-" + trace.getMethodName().replace( "<", "" ) // <init> -> init
+                                                                         .replace( ">", "" );
             }
         }
         return "Unable to locate TestEngine creation";