diff --git a/scripts/config.pl b/scripts/config.pl
index bd6c7e557..4f6df09fd 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -2,4 +2,6 @@
 # Backward compatibility redirection
 my $py = $0;
 $py =~ s/\.pl$/.py/;
-exec 'python3', $py, @ARGV
+exec 'python3', $py, @ARGV;
+print STDERR "$0: python3: $!\n";
+exit 127;