diff --git a/stylus/components/forms.styl b/stylus/components/forms.styl
index b33e8cee10..9f5dc9865e 100644
--- a/stylus/components/forms.styl
+++ b/stylus/components/forms.styl
@@ -277,7 +277,7 @@ $input-text
     &:not(:focus):invalid
         border rem(1) solid var(--pomegranate)
 
-    &[aria-disabled]
+    &[aria-disabled=true]
     &[disabled]
         @extend $input--disabled
 
@@ -346,7 +346,7 @@ $checkbox
             background-image embedurl('../../assets/icons/ui/dash-white.svg')
             background-size contain
 
-    &[aria-disabled]
+    &[aria-disabled=true]
         span
             opacity .5
             cursor not-allowed