diff --git a/DataMinerAlgorithmsCrawler/src/main/java/org/gcube/data/publishing/gCatFeeder/collectors/dm/model/UserIdentity.java b/DataMinerAlgorithmsCrawler/src/main/java/org/gcube/data/publishing/gCatFeeder/collectors/dm/model/UserIdentity.java
index 170a432..f157681 100644
--- a/DataMinerAlgorithmsCrawler/src/main/java/org/gcube/data/publishing/gCatFeeder/collectors/dm/model/UserIdentity.java
+++ b/DataMinerAlgorithmsCrawler/src/main/java/org/gcube/data/publishing/gCatFeeder/collectors/dm/model/UserIdentity.java
@@ -19,10 +19,10 @@ public class UserIdentity {
 	public String asStringValue() {
 		StringBuilder b=new StringBuilder();
 		b.append(lastName +",");
-		if(firstName!=null)b.append(firstName +",");
-		if(email!=null)b.append(email +",");
-		if(orcid!=null)b.append(orcid+",");
-		return b.substring(0, b.lastIndexOf(","));
+		if(firstName!=null)b.append(" "+firstName +",");
+		if(email!=null)b.append(" "+email +",");
+		if(orcid!=null)b.append(" "+orcid+",");
+		return b.substring(0, b.lastIndexOf(",")).trim();
 	}
 	
 }