diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
index eb6597063e53..cfcf53bfe572 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm
@@ -2087,7 +2087,7 @@ sub INPUT_handler {
             (\w+ | length\(\w+\)) # name or length(name)
             $
           /xs
-      or $self->blurt("Error: invalid argument declaration '$ln'"), next;
+      or $self->blurt("Error: invalid parameter declaration '$ln'"), next;
 
     # length(s) is only allowed in the XSUB's signature.
     if ($var_name =~ /^length\((\w+)\)$/) {
@@ -2116,7 +2116,7 @@ sub INPUT_handler {
           or (!$param->{is_synthetic} and exists $param->{type})
       ) {
           $self->blurt(
-            "Error: duplicate definition of argument '$var_name' ignored");
+            "Error: duplicate definition of parameter '$var_name' ignored");
           next;
       }
       $param->{in_input} = 1;
@@ -2230,7 +2230,7 @@ sub OUTPUT_handler {
     #
     my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s;
 
-    $self->blurt("Error: duplicate OUTPUT argument '$outarg' ignored"), next
+    $self->blurt("Error: duplicate OUTPUT parameter '$outarg' ignored"), next
       if $self->{xsub_map_varname_to_seen_in_OUTPUT}->{$outarg}++;
 
     if (!$self->{xsub_seen_RETVAL_in_OUTPUT} and $outarg eq 'RETVAL') {
@@ -2251,7 +2251,7 @@ sub OUTPUT_handler {
                     : $self->{xsub_sig}{names}{$outarg}{arg_num};
 
     unless (defined $var_num) {
-      $self->blurt("Error: OUTPUT $outarg not an argument");
+      $self->blurt("Error: OUTPUT $outarg not an parameter");
       next;
     }
 
diff --git a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
index 7868f67a1218..acf1fcb3188d 100644
--- a/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
+++ b/dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS/Node.pm
@@ -557,7 +557,7 @@ sub parse {
       # regex doesn't work. This code path should ideally never be
       # reached, and indicates a design weakness in $C_arg.
       @param_texts = split(/\s*,\s*/, $sig_text);
-      Warn($pxs, "Warning: cannot parse argument list '$sig_text', fallback to split");
+      Warn($pxs, "Warning: cannot parse parameter list '$sig_text', fallback to split");
     }
   }
   else {
@@ -649,7 +649,7 @@ sub parse {
 
     if (exists $self->{names}{$name}) {
       $pxs->blurt(
-          "Error: duplicate definition of argument '$name' ignored");
+          "Error: duplicate definition of parameter '$name' ignored");
       next;
     }
 
diff --git a/dist/ExtUtils-ParseXS/t/001-basic.t b/dist/ExtUtils-ParseXS/t/001-basic.t
index e23936e8cbf7..75792b4bc3a6 100644
--- a/dist/ExtUtils-ParseXS/t/001-basic.t
+++ b/dist/ExtUtils-ParseXS/t/001-basic.t
@@ -894,7 +894,7 @@ EOF
 
     for my $var (qw(a b c alien)) {
         my $count = () =
-            $stderr =~ /duplicate definition of argument '$var'/g;
+            $stderr =~ /duplicate definition of parameter '$var'/g;
         is($count, 1, "One dup error for \"$var\"");
     }
 }
@@ -1190,7 +1190,7 @@ EOF
                 'int',
                 'X::Y::f1(THIS, int i)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'THIS' /,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'THIS' /,
                  "C++: f1 dup THIS" ],
         ],
 
@@ -1200,7 +1200,7 @@ EOF
                 'int',
                 'X::Y::f2(int THIS, int i)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'THIS' /,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'THIS' /,
                  "C++: f2 dup THIS" ],
         ],
 
@@ -1210,7 +1210,7 @@ EOF
                 'int',
                 'X::Y::new(int CLASS, int i)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'CLASS' /,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'CLASS' /,
                  "C++: new dup CLASS" ],
         ],
 
@@ -1251,7 +1251,7 @@ EOF
                 '    int THIS',
                 '    long THIS',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'THIS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'THIS'/,
                     "dup err" ],
         ],
 
@@ -1262,7 +1262,7 @@ EOF
                 'int',
                 'X::Y::f6(int THIS)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'THIS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'THIS'/,
                     "dup err" ],
         ],
 
@@ -1273,7 +1273,7 @@ EOF
                 'int',
                 'X::Y::f7(THIS)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'THIS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'THIS'/,
                     "dup err" ],
         ],
 
@@ -1300,7 +1300,7 @@ EOF
                 '    int CLASS',
                 '    long CLASS',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'CLASS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'CLASS'/,
                     "dup err" ],
         ],
 
@@ -1311,7 +1311,7 @@ EOF
                 'int',
                 'X::Y::new(int CLASS)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'CLASS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'CLASS'/,
                     "dup err" ],
         ],
 
@@ -1322,7 +1322,7 @@ EOF
                 'int',
                 'X::Y::new(CLASS)',
             ],
-            [ 1, 0, qr/\QError: duplicate definition of argument 'CLASS'/,
+            [ 1, 0, qr/\QError: duplicate definition of parameter 'CLASS'/,
                     "dup err" ],
         ],