diff --git a/src/material-examples/form-field-custom-control/form-field-custom-control-example.html b/src/material-examples/form-field-custom-control/form-field-custom-control-example.html
index cfa6188f73b..a720cfd4018 100644
--- a/src/material-examples/form-field-custom-control/form-field-custom-control-example.html
+++ b/src/material-examples/form-field-custom-control/form-field-custom-control-example.html
@@ -1,7 +1,7 @@
 <div [formGroup]="parts">
-  <input class="area" formControlName="area" size="3" [disabled]="disabled">
+  <input class="area" formControlName="area" size="3">
   <span>&ndash;</span>
-  <input class="exchange" formControlName="exchange" size="3" [disabled]="disabled">
+  <input class="exchange" formControlName="exchange" size="3">
   <span>&ndash;</span>
-  <input class="subscriber" formControlName="subscriber" size="4" [disabled]="disabled">
+  <input class="subscriber" formControlName="subscriber" size="4">
 </div>