diff --git a/Koha/ILL/Request.pm b/Koha/ILL/Request.pm
index 3816afce85..d9ab8297a0 100644
--- a/Koha/ILL/Request.pm
+++ b/Koha/ILL/Request.pm
@@ -910,17 +910,38 @@ Mark a request as completed (status = COMP).
 =cut
 
 sub mark_completed {
-    my ($self) = @_;
-    $self->status('COMP')->store;
-    $self->completed( dt_from_string() )->store;
-    return {
-        error   => 0,
-        status  => '',
-        message => '',
-        method  => 'mark_completed',
-        stage   => 'commit',
-        next    => 'illview',
-    };
+    my ( $self, $params ) = @_;
+
+    my $stage = $params->{stage};
+
+    my $status_aliases_exist = Koha::AuthorisedValues->search( { category => 'ILL_STATUS_ALIAS' } )->count;
+
+    if ( ( !$stage || $stage eq 'init' ) && $status_aliases_exist ) {
+        return {
+            method => 'mark_completed',
+        };
+    } elsif ( !$stage || $stage eq 'complete' ) {
+
+        $self->status('COMP');
+        $self->status_alias( $params->{status_alias} ) if $params->{status_alias};
+        $self->completed( dt_from_string() );
+        $self->store;
+        return {
+            stage => 'commit',
+            next  => 'illview',
+        };
+    } else {
+
+        # Invalid stage, return error.
+        return {
+            error   => 1,
+            status  => 'unknown_stage',
+            message => '',
+            method  => 'confirm',
+            stage   => $params->{stage},
+            value   => {},
+        };
+    }
 }
 
 =head2 backend_illview
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/ill/ill-requests.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/ill/ill-requests.tt
index 26ba077ed9..63974c3f9d 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/ill/ill-requests.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/ill/ill-requests.tt
@@ -45,6 +45,8 @@
                 <span>Manage request [% request.id_prefix _ request.illrequest_id | html %]</span>
             [% ELSIF op == 'confirm' %]
                 <span>Confirm request [% request.id_prefix _ request.illrequest_id | html %]</span>
+            [% ELSIF op == 'mark_completed' %]
+                <span>Complete request request [% request.id_prefix _ request.illrequest_id | html %]</span>
             [% ELSIF op == 'delete_confirm' %]
                 <span>Delete request [% request.id_prefix _ request.illrequest_id | html %]</span>
             [% ELSIF op == 'generic_confirm' %]
@@ -115,6 +117,29 @@
             [% ELSIF op == 'confirm' %]
                 <h1>Confirm ILL request</h1>
                 [% PROCESS $whole.template %]
+            [% ELSIF op == 'mark_completed' %]
+                <h1>Complete ILL request</h1>
+                <p>Proceeding with this action will set this request to 'Completed'.</p>
+                <p>You can select a status alias from the available options:</p>
+                <p>
+                    [% base_url = "/cgi-bin/koha/ill/ill-requests.pl" %]
+                    [% proceed_url = base_url _ "?method=mark_completed&stage=complete" _ "&illrequest_id=" _ request.illrequest_id %]
+                    <form action="[% proceed_url | url %]" method="get">
+                        <select name="status_alias">
+                            <option value="" selected></option>
+                            [% FOREACH alias IN AuthorisedValues.Get('ILL_STATUS_ALIAS') %]
+                                <option value="[% alias.authorised_value | html %]" > [% alias.lib | html %] </option>
+                            [% END %]
+                        </select>
+                        <input type="hidden" name="method" value="mark_completed">
+                        <input type="hidden" name="stage" value="complete">
+                        <input type="hidden" name="illrequest_id" value="[% request.illrequest_id %]">
+                        <fieldset class="action">
+                            <button type="submit" class="btn btn-sm btn-primary">Complete request</button>
+                            <a class="btn btn-sm btn-default cancel" href="[% base_url | url %]">Cancel</a>
+                        </fieldset>
+                    </form>
+                </p>
             [% ELSIF op == 'cud-cancel' and !whole.error %]
                 <h1>Cancel a confirmed request</h1>
                 [% PROCESS $whole.template %]