diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
index e211081bde9..d50b5010cd0 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
@@ -11,7 +11,7 @@ use Symbol;
 
 our $VERSION;
 BEGIN {
-  $VERSION = '3.17';
+  $VERSION = '3.18';
 }
 use ExtUtils::ParseXS::Constants $VERSION;
 use ExtUtils::ParseXS::CountLines $VERSION;
@@ -1768,7 +1768,7 @@ sub output_init {
     $argsref->{init},
     $argsref->{printed_name}
   );
-  my $arg = "ST(" . ($num - 1) . ")";
+  my $arg = $num ? "ST(" . ($num - 1) . ")" : "/* not a parameter */";
 
   if (  $init =~ /^=/  ) {
     if ($printed_name) {
diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Constants.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Constants.pm
index 2f822dacbe9..2e27169aa22 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Constants.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Constants.pm
@@ -3,7 +3,7 @@ use strict;
 use warnings;
 use Symbol;
 
-our $VERSION = '3.16';
+our $VERSION = '3.18';
 
 =head1 NAME
 
diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/CountLines.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/CountLines.pm
index 66944cd629d..7e2a0f5030b 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/CountLines.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/CountLines.pm
@@ -1,7 +1,7 @@
 package ExtUtils::ParseXS::CountLines;
 use strict;
 
-our $VERSION = '3.16';
+our $VERSION = '3.18';
 
 our $SECTION_END_MARKER;
 
diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Utilities.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Utilities.pm
index 0ae1eaed25b..d0089f8c009 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Utilities.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Utilities.pm
@@ -6,7 +6,7 @@ use File::Spec;
 use lib qw( lib );
 use ExtUtils::ParseXS::Constants ();
 
-our $VERSION = '3.17';
+our $VERSION = '3.18';
 
 our (@ISA, @EXPORT_OK);
 @ISA = qw(Exporter);
diff --git a/dist/ExtUtils-ParseXS/t/115-avoid-noise.t b/dist/ExtUtils-ParseXS/t/115-avoid-noise.t
index 21febb2ab0b..2a99748affa 100644
--- a/dist/ExtUtils-ParseXS/t/115-avoid-noise.t
+++ b/dist/ExtUtils-ParseXS/t/115-avoid-noise.t
@@ -12,7 +12,6 @@ chdir 't' or die "Can't chdir to t/, $!";
 # warning in that case.
 
 {
-  local $TODO = "Test for warning on non-parameter in parameter list";
   my $out;
   open my $out_fh, ">", \$out;
   my @warnings;