diff --git a/libsrc/meshing/global.cpp b/libsrc/meshing/global.cpp
index f01a0ab8..4a6237c3 100644
--- a/libsrc/meshing/global.cpp
+++ b/libsrc/meshing/global.cpp
@@ -88,7 +88,8 @@ namespace netgen
   DebugParameters debugparam;
   bool verbose = 0;
 
-  int timestamp = 0;
+  size_t timestamp = 0;
+  /*
   int GetTimeStamp() 
   { 
     return timestamp; 
@@ -99,4 +100,5 @@ namespace netgen
     timestamp++;
     return timestamp;
   }
+  */
 }
diff --git a/libsrc/meshing/meshtype.hpp b/libsrc/meshing/meshtype.hpp
index 1471c541..fe2b98af 100644
--- a/libsrc/meshing/meshtype.hpp
+++ b/libsrc/meshing/meshtype.hpp
@@ -54,10 +54,22 @@ namespace netgen
   enum OPTIMIZEGOAL { OPT_QUALITY, OPT_CONFORM, OPT_REST, OPT_WORSTCASE, OPT_LEGAL };
 
 
+  extern size_t timestamp;
+  inline size_t GetTimeStamp() 
+  { 
+    return timestamp; 
+  }
 
+  inline size_t NextTimeStamp()
+  {
+    timestamp++;
+    return timestamp;
+  }
+  
+  /*
   extern DLL_HEADER int GetTimeStamp();
   extern DLL_HEADER int NextTimeStamp();
-
+  */
   class PointGeomInfo
   {
   public: