diff --git a/class.c b/class.c
index d4436432f5f2..f52ceda0e717 100644
--- a/class.c
+++ b/class.c
@@ -238,7 +238,7 @@ XS(injected_constructor)
         while((he = hv_iternext(params)))
             sv_catpvf(paramnames, ", %" SVf, SVfARG(HeSVKEY_force(he)));
 
-        croak("Unrecognised parameters for %" HvNAMEf_QUOTEDPREFIX " constructor: %" SVf,
+        croak("Unrecognized parameters for %" HvNAMEf_QUOTEDPREFIX " constructor: %" SVf,
                 HvNAMEfARG(stash), SVfARG(paramnames));
     }
 
diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index cdb7b1eb0882..7be901de74dc 100644
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -7544,7 +7544,7 @@ The message attempts to include the name of the called subroutine.  If
 the subroutine has been aliased, the subroutine's original name will be
 shown, regardless of what name the caller used.
 
-=item Unrecognised parameters for "%s" constructor: %s
+=item Unrecognized parameters for "%s" constructor: %s
 
 (F) You called new on a class but supplied a parameter name that
 didn't match a class field name.
diff --git a/t/class/construct.t b/t/class/construct.t
index 3d145ab5ce40..7f50f218b52a 100644
--- a/t/class/construct.t
+++ b/t/class/construct.t
@@ -33,9 +33,9 @@ use builtin qw( blessed reftype );
     is($obj+0, builtin::refaddr($obj), 'numified object');
     like("$obj", qr/^Testcase1=OBJECT\(0x[[:xdigit:]]+\)$/, 'stringified object' );
 
-    ok(!eval { Testcase1->new(x => 123, y => 456); 1 }, 'Unrecognised parameter fails');
-    like($@, qr/^Unrecognised parameters for "Testcase1" constructor: y at /,
-        'Exception thrown by constructor for unrecogniser parameter');
+    ok(!eval { Testcase1->new(x => 123, y => 456); 1 }, 'Unrecognized parameter fails');
+    like($@, qr/^Unrecognized parameters for "Testcase1" constructor: y at /,
+        'Exception thrown by constructor for unrecognized parameter');
 }
 
 {