diff --git a/customize.dist/src/less2/include/alertify.less b/customize.dist/src/less2/include/alertify.less
index 63faf1033..62b7bf3b5 100644
--- a/customize.dist/src/less2/include/alertify.less
+++ b/customize.dist/src/less2/include/alertify.less
@@ -226,7 +226,7 @@
                 width: 100%;
                 font-size: 100%;
                 padding: @alertify_padding-base;
-                &[readonly="readonly"]{
+                &[readonly]{
                     background-color: @alertify-light-bg;
                     color: @cryptpad_text_col;
                     border-color: @alertify-input-fg;