diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/server/dmservice/SClient4WPS.java b/src/main/java/org/gcube/portlets/user/dataminermanager/server/dmservice/SClient4WPS.java
index dacc6c4..76a4c5d 100644
--- a/src/main/java/org/gcube/portlets/user/dataminermanager/server/dmservice/SClient4WPS.java
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/server/dmservice/SClient4WPS.java
@@ -556,12 +556,19 @@ public class SClient4WPS extends SClient {
 		if (node == null)
 			return;
 
-		logger.debug("Node Name: " + node.getNodeName() + "- Value:"
-				+ node.getFirstChild().getNodeValue());
 
+		logger.debug("Node Name: " + node.getNodeName());
 		if (node.getNodeName() == null) {
 			return;
 		}
+		
+		if (node.getFirstChild() != null) {
+			logger.debug("Node Value: " + node.getFirstChild().getNodeValue());
+		} else {
+			logger.debug("FirstChild is NULL");
+			return;
+		}
+
 
 		String text;
 		switch (node.getNodeName()) {