diff --git a/src/Mod/Mesh/App/Core/Elements.h b/src/Mod/Mesh/App/Core/Elements.h
index 6b2ce74f61..7d289dca40 100644
--- a/src/Mod/Mesh/App/Core/Elements.h
+++ b/src/Mod/Mesh/App/Core/Elements.h
@@ -821,8 +821,8 @@ inline MeshFacet::MeshFacet (void)
 : _ucFlag(0),
   _ulProp(0)
 {
-    memset(_aulNeighbours, 0xff, sizeof(ULONG_MAX) * 3);
-    memset(_aulPoints, 0xff, sizeof(ULONG_MAX) * 3);
+    memset(_aulNeighbours, 0xff, sizeof(unsigned long) * 3);
+    memset(_aulPoints, 0xff, sizeof(unsigned long) * 3);
 }
 
 inline MeshFacet::MeshFacet(const MeshFacet &rclF)
diff --git a/src/Mod/Mesh/App/Core/MeshIO.cpp b/src/Mod/Mesh/App/Core/MeshIO.cpp
index 30b25f3d72..96c7d15db1 100644
--- a/src/Mod/Mesh/App/Core/MeshIO.cpp
+++ b/src/Mod/Mesh/App/Core/MeshIO.cpp
@@ -1380,12 +1380,11 @@ bool MeshInput::LoadInventor (std::istream &rstrIn)
     std::streambuf* buf = rstrIn.rdbuf();
     if (!buf)
         return false;
-    if (buf) {
-        std::streamoff ulCurr;
-        ulCurr = buf->pubseekoff(0, std::ios::cur, std::ios::in);
-        ulSize = buf->pubseekoff(0, std::ios::end, std::ios::in);
-        buf->pubseekoff(ulCurr, std::ios::beg, std::ios::in);
-    }
+
+    std::streamoff ulCurr;
+    ulCurr = buf->pubseekoff(0, std::ios::cur, std::ios::in);
+    ulSize = buf->pubseekoff(0, std::ios::end, std::ios::in);
+    buf->pubseekoff(ulCurr, std::ios::beg, std::ios::in);
 
     std::string line;
     MeshGeomFacet clFacet;
diff --git a/src/Mod/Mesh/App/Segment.cpp b/src/Mod/Mesh/App/Segment.cpp
index 18ffc6fc73..ccc2f2d31b 100644
--- a/src/Mod/Mesh/App/Segment.cpp
+++ b/src/Mod/Mesh/App/Segment.cpp
@@ -81,6 +81,16 @@ const std::vector<unsigned long>& Segment::getIndices() const
     return _indices;
 }
 
+Segment::Segment(const Segment& s)
+  : _mesh(s._mesh)
+  , _indices(s._indices)
+  , _name(s._name)
+  , _save(s._save)
+  , _modifykernel(s._modifykernel)
+{
+
+}
+
 const Segment& Segment::operator = (const Segment& s)
 {
     // Do not copy the MeshObject pointer
diff --git a/src/Mod/Mesh/App/Segment.h b/src/Mod/Mesh/App/Segment.h
index 26f8876e91..459ef93ee2 100644
--- a/src/Mod/Mesh/App/Segment.h
+++ b/src/Mod/Mesh/App/Segment.h
@@ -44,6 +44,7 @@ public:
     const std::vector<unsigned long>& getIndices() const;
     bool isEmpty() const { return _indices.empty(); }
 
+    Segment(const Segment&);
     const Segment& operator = (const Segment&);
     bool operator == (const Segment&) const;