--- a/Makefile.PL
+++ b/Makefile.PL
@@ -127,7 +127,7 @@ if (!defined($curl_h)) {
     close H;
 
     for my $e (sort @syms) {
-       if($e =~ /(OBSOLETE|^CURL_EXTERN|^CURL_STRICTER\z|_LAST\z|_LASTENTRY\z)/) {
+       if($e =~ /(OBSOLETE|^CURL_EXTERN|CURLOPT\z|^CURL_STRICTER\z|_LAST\z|_LASTENTRY\z|WIN32)/) {
           next;
        }
        my ($group) = $e =~ m/^([^_]+_)/;