diff --git a/bootstrap.php b/bootstrap.php
index 565b797..cf2c265 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -855,6 +855,10 @@ function imap_headerinfo($imap, $messageNum, $fromLength = 0, $subjectLength = 0
     function imap2_headerinfo($imap, $messageNum, $fromLength = 0, $subjectLength = 0, $defaultHost = null)
     {
         if (IMAP2_RETROFIT_MODE && is_resource($imap) && get_resource_type($imap) == 'imap') {
+            // PHP version === 8.0.*
+            if (PHP_VERSION_ID >= 80000) return imap_headerinfo($imap, $messageNum, $fromLength, $subjectLength);
+
+            // PHP version < 8.0.0
             return imap_headerinfo($imap, $messageNum, $fromLength, $subjectLength, $defaultHost);
         }