diff --git a/app/assets/stylesheets/dsfr.scss b/app/assets/stylesheets/dsfr.scss
index 59d7d398c..7788cd923 100644
--- a/app/assets/stylesheets/dsfr.scss
+++ b/app/assets/stylesheets/dsfr.scss
@@ -15,3 +15,16 @@ select {
 .button.primary {
   font-weight: bold;
 }
+
+// fix firefox < 80 not supporting "appearance: auto" on inputs
+// scss-lint:disable DuplicateProperty
+input[type="checkbox"] {
+  -moz-appearance: checkbox;
+  -moz-appearance: auto;
+}
+
+input[type="radio"] {
+  -moz-appearance: radio;
+  -moz-appearance: auto;
+}
+// scss-lint:enable DuplicateProperty