diff --git a/syntax.php b/syntax.php
index 16edafd..c1d1ffe 100644
--- a/syntax.php
+++ b/syntax.php
@@ -53,7 +53,11 @@ public function handle($match, $state, $pos, Doku_Handler $handler) {
         } elseif (count($extinfo) == 2) {
             $field_value = $extinfo[1];
         } else { // value may contain equal signs
-            $field_value = implode(array_slice($extinfo,1), '=');
+            if (version_compare(PHP_VERSION, '8.0.0') < 0) {
+                $field_value = implode(array_slice($extinfo,1), '=');
+            } else {
+                $field_value = implode('=', array_slice($extinfo,1));
+            }
         }
         return array($field_name, $field_value);
     }