log format
diff --git a/tobago-example/tobago-example-demo/src/main/java/org/apache/myfaces/tobago/example/demo/info/ActivityPhaseListener.java b/tobago-example/tobago-example-demo/src/main/java/org/apache/myfaces/tobago/example/demo/info/ActivityPhaseListener.java
index 4b1ac82..93f8b91 100644
--- a/tobago-example/tobago-example-demo/src/main/java/org/apache/myfaces/tobago/example/demo/info/ActivityPhaseListener.java
+++ b/tobago-example/tobago-example-demo/src/main/java/org/apache/myfaces/tobago/example/demo/info/ActivityPhaseListener.java
@@ -51,10 +51,10 @@
     final String sessionId = ((HttpSession) facesContext.getExternalContext().getSession(true)).getId();
 
     if (facesContext.getPartialViewContext().isAjaxRequest()) {
-      LOG.debug("ajax for sessionId=''{}", sessionId);
+      LOG.debug("ajax for sessionId='{}'", sessionId);
       activityList.executeAjaxRequest(sessionId);
     } else {
-      LOG.debug("full for sessionId=''{}", sessionId);
+      LOG.debug("full for sessionId='{}'", sessionId);
       activityList.executeJsfRequest(sessionId);
     }
   }