diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/data-cleanup/phone.rq b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/data-cleanup/phone.rq
index 3ffc95a..f43d0a8 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/data-cleanup/phone.rq
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/data-cleanup/phone.rq
@@ -20,4 +20,8 @@ CONSTRUCT {
   FILTER(REGEX(?finalResult, """^\\+((32\\d{8})|(324\\d{8})|((?!32)\\d+))$"""))
 
   BIND(CONCAT("tel:", ?finalResult) as ?cleanedPhoneNumber)
+
+  FILTER NOT EXISTS {
+    ?s schema:telephone "" .
+  }
 }
diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/address.sparql b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/address.sparql
index 7d72f5a..41f7523 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/address.sparql
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/address.sparql
@@ -3,4 +3,8 @@ CONSTRUCT {
 } WHERE {
   ?s a <http://www.w3.org/ns/locn#Address>;
     ?p ?o.
+
+  FILTER NOT EXISTS {
+    ?s ?p "" .
+  }
 }
\ No newline at end of file
diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/contactpoint.sparql b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/contactpoint.sparql
index 839fbd4..d87a2ef 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/contactpoint.sparql
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/contactpoint.sparql
@@ -4,4 +4,8 @@ CONSTRUCT {
   ?s a <http://schema.org/ContactPoint>;
     ?p ?o.
  FILTER (?p NOT IN (<http://schema.org/telephone>))
+
+ FILTER NOT EXISTS {
+   ?s ?p "" .
+ }
 }
\ No newline at end of file
diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/functionaris.sparql b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/functionaris.sparql
index c339689..e753a79 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/functionaris.sparql
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/functionaris.sparql
@@ -3,4 +3,8 @@ CONSTRUCT {
 } WHERE {
   ?s a <http://data.lblod.info/vocabularies/leidinggevenden/Functionaris>;
     ?p ?o.
+
+ FILTER NOT EXISTS {
+   ?s ?p "" .
+ }
 }
\ No newline at end of file
diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/person.sparql b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/person.sparql
index 60d28ac..3433dba 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/person.sparql
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/pass/person.sparql
@@ -8,4 +8,8 @@ CONSTRUCT {
     <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>,
     <http://xmlns.com/foaf/0.1/familyName>
     ))
+
+  FILTER NOT EXISTS {
+   ?s ?p "" .
+  }
 }
\ No newline at end of file
diff --git a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/predicate/names.rq b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/predicate/names.rq
index cd33077..eee2571 100644
--- a/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/predicate/names.rq
+++ b/config/loket-consumer/leidinggevenden/mapping/queries/dl2op/predicate/names.rq
@@ -19,4 +19,5 @@ CONSTRUCT {
 
   OPTIONAL { ?s persoon_loket:gebruikteVoornaam ?gebruikteVoornaam . }
   OPTIONAL { ?s foaf:name ?name . }
+
 }