diff --git a/static/main-scpc.html b/static/main-scpc.html
index f198c43..62c2a8d 100644
--- a/static/main-scpc.html
+++ b/static/main-scpc.html
@@ -176,6 +176,7 @@
                     <label>
                         <span>Roll-off</span>
                         <select v-model="param.tx.rolloff">
+                            <option :value="2">0.02</option>
                             <option :value="5">0.05</option>
                             <option :value="10">0.10</option>
                             <option :value="15">0.15</option>
@@ -325,6 +326,7 @@
                     <label>
                         <span>Roll-off</span>
                         <select v-model="param.rx.rolloff">
+                            <option :value="2">0.02</option>
                             <option :value="5">0.05</option>
                             <option :value="10">0.10</option>
                             <option :value="15">0.15</option>