diff --git a/src/OpenMesh/Core/Mesh/PolyConnectivity.cc b/src/OpenMesh/Core/Mesh/PolyConnectivity.cc
index 54c087e8..1302a20d 100644
--- a/src/OpenMesh/Core/Mesh/PolyConnectivity.cc
+++ b/src/OpenMesh/Core/Mesh/PolyConnectivity.cc
@@ -111,7 +111,7 @@ void PolyConnectivity::adjust_outgoing_halfedge(VertexHandle _vh)
 //-----------------------------------------------------------------------------
 
 PolyConnectivity::FaceHandle
-PolyConnectivity::add_face(const VertexHandle* _vertex_handles, uint _vhs_size)
+PolyConnectivity::add_face(const VertexHandle* _vertex_handles, size_t _vhs_size)
 {
   VertexHandle                   vh;
   uint                           i, ii, n(_vhs_size), id;
diff --git a/src/OpenMesh/Core/Mesh/PolyConnectivity.hh b/src/OpenMesh/Core/Mesh/PolyConnectivity.hh
index 955c8a86..757ad491 100644
--- a/src/OpenMesh/Core/Mesh/PolyConnectivity.hh
+++ b/src/OpenMesh/Core/Mesh/PolyConnectivity.hh
@@ -230,7 +230,7 @@ public:
   * @param _vhandles pointer to a sorted list of vertex handles (also defines order in which the vertices are added to the face)
   * @param _vhs_size number of vertex handles in the array
   */
-  FaceHandle add_face(const VertexHandle* _vhandles, uint _vhs_size);
+  FaceHandle add_face(const VertexHandle* _vhandles, size_t _vhs_size);
   //@}
 
   /// \name Deleting mesh items and other connectivity/topology modifications
diff --git a/src/OpenMesh/Core/Mesh/TriConnectivity.cc b/src/OpenMesh/Core/Mesh/TriConnectivity.cc
index d920414f..c786caa9 100644
--- a/src/OpenMesh/Core/Mesh/TriConnectivity.cc
+++ b/src/OpenMesh/Core/Mesh/TriConnectivity.cc
@@ -49,7 +49,7 @@ namespace OpenMesh
 {
 
 TriConnectivity::FaceHandle
-TriConnectivity::add_face(const VertexHandle* _vertex_handles, uint _vhs_size)
+TriConnectivity::add_face(const VertexHandle* _vertex_handles, size_t _vhs_size)
 {
   // need at least 3 vertices
   if (_vhs_size < 3) return InvalidFaceHandle;
diff --git a/src/OpenMesh/Core/Mesh/TriConnectivity.hh b/src/OpenMesh/Core/Mesh/TriConnectivity.hh
index f1484243..1015b8fd 100644
--- a/src/OpenMesh/Core/Mesh/TriConnectivity.hh
+++ b/src/OpenMesh/Core/Mesh/TriConnectivity.hh
@@ -79,7 +79,7 @@ public:
   FaceHandle add_face(const std::vector<VertexHandle>& _vhandles)
   { return add_face(&_vhandles.front(), _vhandles.size()); }
   
-  FaceHandle add_face(const VertexHandle* _vhandles, uint _vhs_size);
+  FaceHandle add_face(const VertexHandle* _vhandles, size_t _vhs_size);
   
   FaceHandle add_face(VertexHandle _vh0, VertexHandle _vh1, VertexHandle _vh2)
   {