diff --git a/src/OpenMesh/Tools/Utils/Gnuplot.cc b/src/OpenMesh/Tools/Utils/Gnuplot.cc
index 82b6de9c..f0cebe52 100644
--- a/src/OpenMesh/Tools/Utils/Gnuplot.cc
+++ b/src/OpenMesh/Tools/Utils/Gnuplot.cc
@@ -30,6 +30,7 @@
 #include <fstream>
 #include <sstream>
 #include <list>
+#include <algorithm>
 
 #if defined(WIN32)
 #  define pclose _pclose
diff --git a/src/OpenMesh/Tools/VDPM/VHierarchyWindow.hh b/src/OpenMesh/Tools/VDPM/VHierarchyWindow.hh
index c3ab64fc..ae8b0148 100644
--- a/src/OpenMesh/Tools/VDPM/VHierarchyWindow.hh
+++ b/src/OpenMesh/Tools/VDPM/VHierarchyWindow.hh
@@ -52,7 +52,7 @@
 //== INCLUDES =================================================================
 
 #include <OpenMesh/Tools/VDPM/VHierarchy.hh>
-
+#include <algorithm>
 
 //== FORWARDDECLARATIONS ======================================================