diff --git a/lib/private/Mail/EMailTemplate.php b/lib/private/Mail/EMailTemplate.php
index dd8bdbd8ec9..8227e69ef06 100644
--- a/lib/private/Mail/EMailTemplate.php
+++ b/lib/private/Mail/EMailTemplate.php
@@ -100,7 +100,7 @@ EOF;
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%%">
-									<img class="logo float-center" src="%s" alt="%s" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="%s" alt="%s" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>
diff --git a/tests/Settings/Mailer/NewUserMailHelperTest.php b/tests/Settings/Mailer/NewUserMailHelperTest.php
index b0ee6a9bef3..40ba9ee1c21 100644
--- a/tests/Settings/Mailer/NewUserMailHelperTest.php
+++ b/tests/Settings/Mailer/NewUserMailHelperTest.php
@@ -182,7 +182,7 @@ class NewUserMailHelperTest extends TestCase {
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%">
-									<img class="logo float-center" src="" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>
@@ -415,7 +415,7 @@ EOF;
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%">
-									<img class="logo float-center" src="" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>
diff --git a/tests/data/emails/new-account-email-custom.html b/tests/data/emails/new-account-email-custom.html
index 4bf360b2003..e35b9f57848 100644
--- a/tests/data/emails/new-account-email-custom.html
+++ b/tests/data/emails/new-account-email-custom.html
@@ -23,7 +23,7 @@
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%">
-									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>
diff --git a/tests/data/emails/new-account-email-single-button.html b/tests/data/emails/new-account-email-single-button.html
index 901fdbca69a..d70a8a647d3 100644
--- a/tests/data/emails/new-account-email-single-button.html
+++ b/tests/data/emails/new-account-email-single-button.html
@@ -23,7 +23,7 @@
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%">
-									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>
diff --git a/tests/data/emails/new-account-email.html b/tests/data/emails/new-account-email.html
index c1e56954cf8..3e8814bbfbb 100644
--- a/tests/data/emails/new-account-email.html
+++ b/tests/data/emails/new-account-email.html
@@ -23,7 +23,7 @@
 							<tbody>
 							<tr style="padding:0;text-align:left;vertical-align:top">
 								<center data-parsed="" style="min-width:580px;width:100%">
-									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;max-height:100%;max-width:100px;outline:0;text-align:center;text-decoration:none;width:auto" height="120">
+									<img class="logo float-center" src="https://example.org/img/logo-mail-header.png" alt="TestCloud" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
 								</center>
 							</tr>
 							</tbody>