1 files changed, 1 insertions, 1 deletions
diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
index 179efaa39d..903af14294 100755
--- a/t/check-non-portable-shell.pl
+++ b/t/check-non-portable-shell.pl
@@ -50,7 +50,7 @@ while (<>) {
 	/\blocal\s+[A-Za-z0-9_]*=\$([A-Za-z0-9_{]|[(][^(])/ and
 		err q(quote "$val" in 'local var=$val');
 	/^\s*([A-Z0-9_]+=(\w*|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and
-		err '"FOO=bar shell_func" is not portable';
+		err '"FOO=bar shell_func" is not portable (use test_env FOO=bar shell_func)';
 	$line = '';
 	# this resets our $. for each file
 	close ARGV if eof;