diff --git a/Configure.pl b/Configure.pl
index a32d008a71a..fb64bbe3cf2 100644
--- a/Configure.pl
+++ b/Configure.pl
@@ -112,6 +112,7 @@ sub create_makefile {
     $maketext =~ s/@(\w+)@/$config{$1}/g;
     if ($^O eq 'MSWin32') {
         $maketext =~ s{/}{\\}g;
+        $maketext =~ s{http:\S+}{ do {my $t = $&; $t =~ s'\\'/'g; $t} }eg;
     }
 
     my $outfile = 'Makefile';