diff --git a/src/components/radios/_radios.scss b/src/components/radios/_radios.scss
index 84246786df3..2f8d10b0cfe 100644
--- a/src/components/radios/_radios.scss
+++ b/src/components/radios/_radios.scss
@@ -274,9 +274,9 @@
     .govuk-radios__label::after {
       top: 14px;
       left: 6px;
-      width: 10px;
-      height: 10px;
-      border-width: 1px;
+      width: 0;
+      height: 0;
+      border-width: 6px;
     }
 
     // Fix position of hint with small radios