diff --git a/src/main/java/eu/dnetlib/usagestats/sushilite/domain/SUSHI_Report_Header.java b/src/main/java/eu/dnetlib/usagestats/sushilite/domain/SUSHI_Report_Header.java
index 440b878..ed87fe2 100755
--- a/src/main/java/eu/dnetlib/usagestats/sushilite/domain/SUSHI_Report_Header.java
+++ b/src/main/java/eu/dnetlib/usagestats/sushilite/domain/SUSHI_Report_Header.java
@@ -71,12 +71,12 @@ public class SUSHI_Report_Header {
     public String getReportName() {
         return reportName;
     }
-
+@JsonInclude(JsonInclude.Include.NON_NULL)
     @JsonProperty("Institution_Name")
     public String getInstitutionName() {
         return institutionName;
     }
-
+@JsonInclude(JsonInclude.Include.NON_NULL)
     @JsonProperty("Institution_ID")
     public List<SUSHI_Org_Identifiers> getInstitutionID() {
         return institutionID;