fix test compilation error
diff --git a/jspwiki-main/src/test/java/org/apache/wiki/workflow/WorkflowTest.java b/jspwiki-main/src/test/java/org/apache/wiki/workflow/WorkflowTest.java
index 7e7c516..7b9850d 100644
--- a/jspwiki-main/src/test/java/org/apache/wiki/workflow/WorkflowTest.java
+++ b/jspwiki-main/src/test/java/org/apache/wiki/workflow/WorkflowTest.java
@@ -18,10 +18,6 @@
  */
 package org.apache.wiki.workflow;
 
-import java.math.BigDecimal;
-import java.security.Principal;
-import java.util.Date;
-
 import org.apache.wiki.api.exceptions.WikiException;
 import org.apache.wiki.auth.GroupPrincipal;
 import org.apache.wiki.auth.WikiPrincipal;
@@ -29,6 +25,10 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import java.math.BigDecimal;
+import java.security.Principal;
+import java.util.Date;
+
 public class WorkflowTest
 {
     Workflow w;
@@ -87,7 +87,7 @@
     public void testSetWorkflowManager()
     {
         Assertions.assertNull(w.getWorkflowManager());
-        WorkflowManager m = new WorkflowManager();
+        WorkflowManager m = new DefaultWorkflowManager();
         w.setWorkflowManager(m);
         Assertions.assertEquals(m, w.getWorkflowManager());
     }