diff --git a/src/PhpImap/Mailbox.php b/src/PhpImap/Mailbox.php
index 263a2f23..7e45f316 100644
--- a/src/PhpImap/Mailbox.php
+++ b/src/PhpImap/Mailbox.php
@@ -470,7 +470,7 @@ protected function initMailPart(IncomingMail $mail, $partStructure, $partNum, $m
 			$data = imap_base64($data);
 		}
 		elseif($partStructure->encoding == 4) {
-			$data = imap_qprint($data);
+			$data = quoted_printable_decode($data);
 		}
 
 		$params = array();