diff --git a/themes/pmahomme/scss/_common.scss b/themes/pmahomme/scss/_common.scss
index 915785c159..e32f4c77f9 100644
--- a/themes/pmahomme/scss/_common.scss
+++ b/themes/pmahomme/scss/_common.scss
@@ -350,7 +350,7 @@ fieldset {
     -webkit-box-shadow: 3px 3px 15px #bbb;
     box-shadow: 3px 3px 15px #bbb;
     width: initial;
-    font-size: 1rem;
+    font-size: 1em;
   }
 }