diff --git a/libsrc/include/nginterface_v2.hpp b/libsrc/include/nginterface_v2.hpp
index 6dd9ff07..d2407ea8 100644
--- a/libsrc/include/nginterface_v2.hpp
+++ b/libsrc/include/nginterface_v2.hpp
@@ -271,8 +271,8 @@ namespace netgen
 
     // returns domain numbers of domains next to boundary bnr -> (domin, domout)
     // 3D only
-    std::pair<int,int> GetBoundaryNeighbouringDomains (int bnr);
-    
+    // std::pair<int,int> GetBoundaryNeighbouringDomains (int bnr);
+
     void Refine (NG_REFINEMENT_TYPE reftype,
                  void (*taskmanager)(function<void(int,int)>) = &DummyTaskManager2);
 
diff --git a/libsrc/interface/nginterface_v2.cpp b/libsrc/interface/nginterface_v2.cpp
index 509d1274..d7548127 100644
--- a/libsrc/interface/nginterface_v2.cpp
+++ b/libsrc/interface/nginterface_v2.cpp
@@ -141,16 +141,6 @@ namespace netgen
     return -1;
   }
 
-  std::pair<int,int> Ngx_Mesh :: GetBoundaryNeighbouringDomains (int bnr)
-  {
-    if ( mesh->GetDimension() == 3 )
-      return std::pair<int,int>(mesh->GetFaceDescriptor(bnr+1).DomainIn(),
-				mesh->GetFaceDescriptor(bnr+1).DomainOut());
-    else
-      return std::pair<int,int>(-1,-1);
-  }
-
-
   /*
   Ng_Point Ngx_Mesh :: GetPoint (int nr) const
   {