diff --git a/openid-connect-server-webapp/src/main/webapp/resources/template/dynreg.html b/openid-connect-server-webapp/src/main/webapp/resources/template/dynreg.html
index ca1d21158..c8f7423cf 100644
--- a/openid-connect-server-webapp/src/main/webapp/resources/template/dynreg.html
+++ b/openid-connect-server-webapp/src/main/webapp/resources/template/dynreg.html
@@ -232,23 +232,19 @@
 
                 <div class="controls">
 
-                    <label class="checkbox">
-                        <input id="grantTypes-authorization_code" type="checkbox"
+                    <label class="radio">
+                        <input id="grantTypes-authorization_code" type="radio" name="grantTypes"
                         <%=($.inArray("authorization_code", client.grant_types) > -1 ? 'checked' : '')%>>
                         authorization code
                     </label>
-                    <label class="checkbox">
-                        <input id="grantTypes-client_credentials" type="checkbox"
+                    <label class="radio">
+                        <input id="grantTypes-client_credentials" type="radio" name="grantTypes"
                         <%=($.inArray("client_credentials", client.grant_types) > -1 ? 'checked' : '')%>> client credentials
                     </label>
-                    <label class="checkbox">
-                        <input id="grantTypes-implicit" type="checkbox" <%=($.inArray("implicit", client.grant_types) > -1 ? 'checked' : '')%>> implicit
-                    </label>
-<!--
-                    <label class="checkbox">
-                        <input id="grantTypes-refresh_token" type="checkbox" <%=($.inArray("refresh_token", client.grant_types) > -1 ? 'checked' : '')%>> refresh
+                    <label class="radio">
+                        <input id="grantTypes-implicit"  type="radio" name="grantTypes"
+						<%=($.inArray("implicit", client.grant_types) > -1 ? 'checked' : '')%>> implicit
                     </label>
--->
                     <label class="checkbox">
                         <input id="grantTypes-redelegate" type="checkbox" <%=($.inArray("urn:ietf:params:oauth:grant_type:redelegate", client.grant_types) > -1 ? 'checked' : '')%>> redelegate
                     </label>