diff --git a/src/tools/msvc/vcregress.pl b/src/tools/msvc/vcregress.pl
index fc826da3ff..168ea7f82a 100644
--- a/src/tools/msvc/vcregress.pl
+++ b/src/tools/msvc/vcregress.pl
@@ -39,6 +39,14 @@ if (-e "src/tools/msvc/buildenv.pl")
 	do "./src/tools/msvc/buildenv.pl";
 }
 
+my %settings;
+
+while (@ARGV && $ARGV[0] =~ /([A-Za-z]\w*)=(.*)/)
+{
+	$settings{$1}={$2};
+	shift;
+}
+
 my $what = shift || "";
 if ($what =~
 	/^(check|installcheck|plcheck|contribcheck|modulescheck|ecpgcheck|isolationcheck|upgradecheck|bincheck|recoverycheck|taptest)$/i