diff --git a/gdal/nmake.opt b/gdal/nmake.opt
index b82451c83dd0..39c92bb6ca8d 100644
--- a/gdal/nmake.opt
+++ b/gdal/nmake.opt
@@ -730,7 +730,7 @@ MAKE	=	nmake /nologo
 CC	=	cl
 !ENDIF
 
-INSTALL	=	xcopy /y /r /d /f
+INSTALL	=	xcopy /y /r /d /f /I
 
 CPLLIB	=    $(GDAL_ROOT)/port/cpl.lib