diff --git a/src/services/mail.service.ts b/src/services/mail.service.ts
index 3b198c1e485fcec5e7c3ce0f500efe66db31277b..864f8f0d32b3599f59353adb4b2031c858c777b6 100644
--- a/src/services/mail.service.ts
+++ b/src/services/mail.service.ts
@@ -25,7 +25,11 @@ export default class MailService {
       <title>Bienvenue sur Ecolyo</title>
       <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
       <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+      <meta name="color-scheme" content="only">
       <style type="text/css">
+        :root {
+          color-scheme: light only;
+        }
         @font-face {
         font-family: 'Lato';
         font-style: normal;
@@ -445,7 +449,11 @@ export default class MailService {
       <title>Votre bilan mensuel</title>
       <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
       <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+      <meta name="color-scheme" content="only">
       <style type="text/css">
+        :root {
+          color-scheme: light only;
+        }
         @font-face {
         font-family: 'Lato';
         font-style: normal;