diff --git a/tests/TestMessageFactory.php b/tests/TestMessageFactory.php
index 300dc32..d01cd84 100644
--- a/tests/TestMessageFactory.php
+++ b/tests/TestMessageFactory.php
@@ -218,7 +218,7 @@ public function createMessageWithCustomHeaders(): Message
         $message = new Message(
             new Address("blip@test.org"),
             new Address("blub@test.org"),
-            "We need a special character - Ø - so that escapeHeaderValue is used, and more than 75 characters - see documentation for quoted_printable_encode()",
+            "We need a special character - Ø - so that quoted_printable_encode is used, and more than 75 characters - see documentation for quoted_printable_encode()",
             "Hello!"
         );
 
diff --git a/tests/unit/MIMEWriterCest.php b/tests/unit/MIMEWriterCest.php
index dc81740..06fe48b 100644
--- a/tests/unit/MIMEWriterCest.php
+++ b/tests/unit/MIMEWriterCest.php
@@ -341,7 +341,7 @@ public function writeMessageWithCustomHeaders(UnitTester $I): void
             Date: Thu, 15 Sep 2016 17:20:54 +0200
             To: blip@test.org
             From: blub@test.org
-            Subject: =?UTF-8?Q?We need a special character - =C3=98 - so that escapeHeaderValue is used, and more than 75 characters - see documentation for quoted_printable_encode()?=
+            Subject: =?UTF-8?Q?We need a special character - =C3=98 - so that quoted_printable_encode is used, and more than 75 characters - see documentation for quoted_printable_encode()?=
             MIME-Version: 1.0
             X-Custom-Header: custom-value
             Content-Type: text/plain; charset=UTF-8