=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/program/ProgramInstance.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/program/ProgramInstance.java	2014-03-18 13:20:03 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/program/ProgramInstance.java	2014-03-19 12:09:00 +0000
@@ -177,7 +177,7 @@
     public int hashCode()
     {
         final int prime = 31;
-        int result = 1;
+        int result = super.hashCode();
 
         result = prime * result + ((dateOfIncident == null) ? 0 : dateOfIncident.hashCode());
         result = prime * result + ((enrollmentDate == null) ? 0 : enrollmentDate.hashCode());