diff --git a/src/OpenMesh/Apps/VDProgMesh/Analyzer/vdpmanalyzer.cc b/src/OpenMesh/Apps/VDProgMesh/Analyzer/vdpmanalyzer.cc
index 12c3f1fc..65b2288a 100644
--- a/src/OpenMesh/Apps/VDProgMesh/Analyzer/vdpmanalyzer.cc
+++ b/src/OpenMesh/Apps/VDProgMesh/Analyzer/vdpmanalyzer.cc
@@ -229,7 +229,10 @@ replace_extension( std::string& _s, const std::string& _e )
   if (dot == std::string::npos)
   { _s += "." + _e; }
   else
-  { _s = _s.substr(0,dot+1)+_e; }
+  { 
+    const std::string temp_name = _s.substr(0,dot+1);
+    _s = temp_name + _e; 
+  }
   return _s;
 }