diff --git a/src/OpenMesh/Tools/Utils/Timer.hh b/src/OpenMesh/Tools/Utils/Timer.hh
index f96870b5..b8b3b665 100644
--- a/src/OpenMesh/Tools/Utils/Timer.hh
+++ b/src/OpenMesh/Tools/Utils/Timer.hh
@@ -98,8 +98,12 @@ public:
 
   Timer(void);
 
+  /// Make the timer non copyable
   Timer(const Timer& _other) = delete;
 
+  /// Make the timer non copyable
+  Timer& operator=( const Timer& ) = delete;
+
   ~Timer(void);
 
   /// Returns true if self is in a valid state!
@@ -144,6 +148,8 @@ public:
    */
   static std::string as_string(double seconds, Format format = Automatic);
 
+
+
 public:
 
   //@{