diff --git a/src/Gui/SoFCSelection.h b/src/Gui/SoFCSelection.h
index e1ae8a98a..61e54ffa7 100644
--- a/src/Gui/SoFCSelection.h
+++ b/src/Gui/SoFCSelection.h
@@ -27,7 +27,9 @@
 # include <OpenGL/gl.h>
 # else
 # ifdef FC_OS_WIN32
+#  ifndef NOMINMAX
 #  define NOMINMAX
+#  endif
 #  include <windows.h>
 # endif
 # include <GL/gl.h>