diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 087597a87..c4965e034 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -6,6 +6,7 @@
 - **Form Validation** - Bracketed notation can now be omitted for rules, instead passing in bracketed values with the `value` parameter #3313
 
 **Bugs**
+- **Form** - Fixed issue where `disabled fields` with radio inputs would not correctly dim the label **Thanks @louwers** #4366
 - **Menu** - Fixed issue where `dropdown` in `vertical menu` would not correctly open `upward` when no space below **Thanks @gdaunton** #4150 #4156
 - **Dropdown** - Fixed issue where dropdown `clear` would not remove active state when `useLabels: true` and multiple dropdown #4275 #4366 **Thanks vinh123456789**
 - **Dropdown** - `dropdown icon` no longer relies on stopping event propagation. This means using the dropdown icon will now cause other dropdowns to correctly hide. #3998
diff --git a/src/definitions/collections/form.less b/src/definitions/collections/form.less
index 597017159..eba909a35 100755
--- a/src/definitions/collections/form.less
+++ b/src/definitions/collections/form.less
@@ -596,7 +596,8 @@
   pointer-events: none;
   opacity: @disabledOpacity;
 }
-.ui.form .field.disabled label {
+.ui.form .field.disabled > label,
+.ui.form .fields.disabled > label {
   opacity: @disabledLabelOpacity;
 }
 .ui.form .field.disabled :disabled {