diff --git a/src/proc/mobject/session/scope-query.hpp b/src/proc/mobject/session/scope-query.hpp
index 865114b2c..e12f5560e 100644
--- a/src/proc/mobject/session/scope-query.hpp
+++ b/src/proc/mobject/session/scope-query.hpp
@@ -87,7 +87,7 @@ namespace session {
       typedef function<bool(Pla)> ContentFilter;
       
       /** yield an additional filter to be applied
-       *  on the result set. */
+       *  to the result set. */
       virtual ContentFilter  buildContentFilter()  const  =0;
     };
   
@@ -175,7 +175,7 @@ namespace session {
       ContentFilter
       contentFilter () const
         {
-          return buildContentFilter();
+          return buildContentFilter(); ////////////////////////FIXME why isn't this dispatched via VTABLE?????
         }
       
       
diff --git a/tests/components/proc/mobject/session/scope-query-test.cpp b/tests/components/proc/mobject/session/scope-query-test.cpp
index a2cc4487e..8d047e906 100644
--- a/tests/components/proc/mobject/session/scope-query-test.cpp
+++ b/tests/components/proc/mobject/session/scope-query-test.cpp
@@ -41,6 +41,15 @@ namespace test    {
   using std::string;
   using std::cout;
   using std::endl;
+  namespace {
+    bool
+    filterfunk (Placement<DummyMO> const& candidate)
+    {
+      string desc = candidate->operator string();
+      cout << "prüfe..." << desc << endl;
+      return desc == "TestSubMO2";
+    }
+  }
   
   
   /**********************************************************************************************
@@ -73,6 +82,8 @@ namespace test    {
           discover (ScopeQuery<DummyMO>    (resolver,scope, CONTENTS) , "contents depth-first, filtered to DummyMO");  ////////////////////// TICKET #532
           discover (ScopeQuery<TestSubMO1> (resolver,scope, CONTENTS) , "contents depth-first, filtered to TestSubMO1");
           discover (ScopeQuery<TestSubMO2> (resolver,scope, CONTENTS) , "contents depth-first, filtered to TestSubMO2");
+
+          discover (SpecificContentsQuery<DummyMO> (resolver,scope, &filterfunk) , "contents depth-first, custom filtered DummyMO");
           
           ScopeQuery<TestSubMO21> specialEl(resolver,scope, CONTENTS);
           ++specialEl; // step in to second solution found...