diff --git a/gramps/plugins/database/dbapi_support/postgresql.py b/gramps/plugins/database/dbapi_support/postgresql.py
index 25f3415ed..e43635978 100644
--- a/gramps/plugins/database/dbapi_support/postgresql.py
+++ b/gramps/plugins/database/dbapi_support/postgresql.py
@@ -57,7 +57,10 @@ class Postgresql(object):
             raise
 
     def fetchone(self):
-        return self.cursor.fetchone()
+        try:
+            return self.cursor.fetchone()
+        except:
+            return None
 
     def fetchall(self):
         return self.cursor.fetchall()