diff --git a/module/VuFind/src/VuFind/Cover/Generator.php b/module/VuFind/src/VuFind/Cover/Generator.php
index 73ec22faed5af91016d058b95232eb5839b19708..a990f2eef1894f480350ea1b44e1de02f279c05e 100644
--- a/module/VuFind/src/VuFind/Cover/Generator.php
+++ b/module/VuFind/src/VuFind/Cover/Generator.php
@@ -111,6 +111,7 @@ class Generator
      * @param string $callnumber Callnumber of the book
      *
      * @return string contents of image file
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     protected function generateSolid($title, $author, $callnumber)
     {
diff --git a/module/VuFind/src/VuFind/ILS/Driver/DAIA.php b/module/VuFind/src/VuFind/ILS/Driver/DAIA.php
index 3067fec7ffe7041b5eef139e35605a71f315a9bd..c7ddc7cdabaa7ecf70a6a0b1ab31c440f6ee10a8 100644
--- a/module/VuFind/src/VuFind/ILS/Driver/DAIA.php
+++ b/module/VuFind/src/VuFind/ILS/Driver/DAIA.php
@@ -112,6 +112,7 @@ class DAIA extends AbstractBase implements \Zend\Log\LoggerAwareInterface
      * @param array  $details Item details from getHoldings return array
      *
      * @return string         URL to ILS's OPAC's place hold screen.
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function getHoldLink($id, $details)
     {
diff --git a/module/VuFind/src/VuFind/ILS/Driver/Demo.php b/module/VuFind/src/VuFind/ILS/Driver/Demo.php
index f555ffc27267e592b1b11f4ad420d2610a900abd..61181aa59fbc0d55a425f02d384a0720a56e53e0 100644
--- a/module/VuFind/src/VuFind/ILS/Driver/Demo.php
+++ b/module/VuFind/src/VuFind/ILS/Driver/Demo.php
@@ -1741,6 +1741,7 @@ class Demo extends AbstractBase
      *
      * @return array An array of data on the request including
      * whether or not it was successful and a system message (if available)
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function changePassword($details)
     {
diff --git a/module/VuFind/src/VuFind/ILS/Driver/VoyagerRestful.php b/module/VuFind/src/VuFind/ILS/Driver/VoyagerRestful.php
index 924aac604fe78d3b576f466b45c2e28be2a02742..9b2076799e623cdd142bd5799b5af6a51d17ec99 100644
--- a/module/VuFind/src/VuFind/ILS/Driver/VoyagerRestful.php
+++ b/module/VuFind/src/VuFind/ILS/Driver/VoyagerRestful.php
@@ -3227,6 +3227,7 @@ EOT;
      *
      * @return bool True if the method can be called with the given parameters,
      * false otherwise.
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function supportsMethod($method, $params)
     {