diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 7921cde8cb..717960037c 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -3,7 +3,7 @@
 use strict;
 
 sub run_cmd_pipe {
-	if ($^O eq 'MSWin32') {
+	if ($^O eq 'MSWin32' || $^O eq 'msys') {
 		my @invalid = grep {m/[":*]/} @_;
 		die "$^O does not support: @invalid\n" if @invalid;
 		my @args = map { m/ /o ? "\"$_\"": $_ } @_;