diff --git a/libsrc/interface/nginterface.cpp b/libsrc/interface/nginterface.cpp
index 2ed31f5f..54df4ff1 100644
--- a/libsrc/interface/nginterface.cpp
+++ b/libsrc/interface/nginterface.cpp
@@ -1918,6 +1918,14 @@ int Ng_GetVertex_SurfaceElements( int vnr, int* elems )
             elems[cnt++] = i+1;
         return cnt;
       }
+    case 1:
+      {
+        int cnt = 0;
+        for (int i = 0; i < mesh->pointelements.Size(); i++)
+          if (mesh->pointelements[i].pnum == vnr)
+            elems[cnt++] = i+1;
+        return cnt;
+      }
     }
   return 0;
 }
diff --git a/libsrc/interface/nginterface_v2.cpp b/libsrc/interface/nginterface_v2.cpp
index b1070839..5372bcd3 100644
--- a/libsrc/interface/nginterface_v2.cpp
+++ b/libsrc/interface/nginterface_v2.cpp
@@ -525,9 +525,10 @@ namespace netgen
                               double * x,
                               double * dxdxi) const
   {
-    PointIndex pnum = mesh->pointelements[elnr].pnum;
+    PointIndex pnum = mesh->pointelements[elnr-1].pnum;
     if (x) x[0] = (*mesh)[pnum](0);
-    if (dxdxi) dxdxi[0] = 0;
+    // if (dxdxi) dxdxi[0] = 0;
+    // Jacobi-matrix is 1 x 0 !!!
   }