diff --git a/app/src/main/res/raw/style.css b/app/src/main/res/raw/style.css
index 285a7e855c..c7eb27097b 100644
--- a/app/src/main/res/raw/style.css
+++ b/app/src/main/res/raw/style.css
@@ -4,6 +4,7 @@ html {
 }
 
 body {
+    font-family: 'Helvetica';
     margin: 16px;
     padding: 0;
     width: auto !important;
@@ -25,3 +26,7 @@ blockquote blockquote blockquote blockquote {
 a:link, a:visited, a:hover, a:active {
     color: var(--kmail-primary-color);
 }
+
+pre {
+    font-family: 'Helvetica';
+}