diff --git a/Maintenance/infrastructure/delaunay.geometryfactory.com/reference-platforms/x64_Cygwin-Vista_MSVS2010-64bits/CMakeCache.txt b/Maintenance/infrastructure/delaunay.geometryfactory.com/reference-platforms/x64_Cygwin-Vista_MSVS2010-64bits/CMakeCache.txt
index 30be7e63327..251c247aa6a 100644
--- a/Maintenance/infrastructure/delaunay.geometryfactory.com/reference-platforms/x64_Cygwin-Vista_MSVS2010-64bits/CMakeCache.txt
+++ b/Maintenance/infrastructure/delaunay.geometryfactory.com/reference-platforms/x64_Cygwin-Vista_MSVS2010-64bits/CMakeCache.txt
@@ -126,7 +126,7 @@ CGAL_AUTO_LINK_MPFR:BOOL=OFF
 CGAL_BINARY_DIR:STATIC=C:/CGAL/CGAL-3.4.1/reference-builds/x64_Cygwin-Vista_MSVS2010-64bits
 
 //User-defined flags
-CGAL_CXX_FLAGS:STRING=-IC:/CGAL/boost_1_44_0-patch -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /fp:strict /fp:except-  /bigobj -IC:/CGAL/boost_1_44_0-patch /wd4503
+CGAL_CXX_FLAGS:STRING=-DCGAL_INCLUDE_WINDOWS_DOT_H -IC:/CGAL/boost_1_44_0-patch -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /fp:strict /fp:except-  /bigobj -IC:/CGAL/boost_1_44_0-patch /wd4503
 
 //Value Computed by CMake
 CGAL_Core_BINARY_DIR:STATIC=C:/CGAL/CGAL-3.4.1/reference-builds/x64_Cygwin-Vista_MSVS2010-64bits/src/CGALCore