diff --git a/src/main/java/org/eclipse/openk/contactbasedata/controller/ContactController.java b/src/main/java/org/eclipse/openk/contactbasedata/controller/ContactController.java
index d6320be..54def44 100644
--- a/src/main/java/org/eclipse/openk/contactbasedata/controller/ContactController.java
+++ b/src/main/java/org/eclipse/openk/contactbasedata/controller/ContactController.java
@@ -59,7 +59,7 @@
             @RequestParam( "withoutAssignedModule") Optional<Boolean> withoutAssignedModule,
             @RequestParam( "expiringDataInPast" ) Optional<Boolean> expiringDataInPast,
             @RequestParam( "deletionLockExceeded") Optional<Boolean> delLockExceeded,
-            @RequestParam( "showAnonymized" ) Optional<Boolean> showAnonymized,
+            @RequestParam( "alsoShowAnonymized" ) Optional<Boolean> showAnonymized,
             @PageableDefault( sort = {"name"}, size = 20, direction = ASC) Pageable pageable ) {
 
         SearchContactsFilterParams filter = new SearchContactsFilterParams();
diff --git a/src/main/java/org/eclipse/openk/contactbasedata/repository/DetailedContactRepository.java b/src/main/java/org/eclipse/openk/contactbasedata/repository/DetailedContactRepository.java
index a144706..3634bb2 100644
--- a/src/main/java/org/eclipse/openk/contactbasedata/repository/DetailedContactRepository.java
+++ b/src/main/java/org/eclipse/openk/contactbasedata/repository/DetailedContactRepository.java
@@ -41,7 +41,7 @@
             + " and (COALESCE(:filterDelLockExceeded) = false or COALESCE(:filterDelLockExceeded) = true and dc.fkContactId in "
             + "        (select distinct amc.tblContact.id from TblAssignmentModulContact amc where "
             + "         amc.deletionLockUntil is not null and amc.deletionLockUntil < :dateTimeNow ))"
-            + " and (COALESCE(:showAnonymized) = false and COALESCE(dc.anonymized, false) = false)"
+            + " and (COALESCE(:showAnonymized) = true or COALESCE(:showAnonymized) = false and COALESCE(dc.anonymized, false) = false)"
     )
     Page<VwDetailedContact> findByFilter(@Param("contactType")String contactType, // NOSONAR _fd 07.02.2020 moving to a param object will not increase the readability here!
                                          @Param("personType") UUID personType,