diff --git a/cmd/lotus-fountain/main.go b/cmd/lotus-fountain/main.go
index d6c6f9107..6c27758a6 100644
--- a/cmd/lotus-fountain/main.go
+++ b/cmd/lotus-fountain/main.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"strconv"
 	"time"
 
 	rice "github.com/GeertJohan/go.rice"
@@ -200,6 +201,11 @@ func (h *handler) mkminer(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	ssize, err := strconv.ParseInt(r.FormValue("sectorSize"), 10, 64)
+	if err != nil {
+		return
+	}
+
 	if owner.Protocol() != address.BLS {
 		w.WriteHeader(400)
 		w.Write([]byte("Miner address must use BLS"))
@@ -254,7 +260,7 @@ func (h *handler) mkminer(w http.ResponseWriter, r *http.Request) {
 	params, err := actors.SerializeParams(&actors.CreateStorageMinerParams{
 		Owner:      owner,
 		Worker:     owner,
-		SectorSize: 1 << 30, // build.SectorSizes[0], // TODO: dropdown allowing selection (1GiB for now)
+		SectorSize: uint64(ssize),
 		PeerID:     peer.ID("SETME"),
 	})
 	if err != nil {
diff --git a/cmd/lotus-fountain/site/miner.html b/cmd/lotus-fountain/site/miner.html
index 8aec74eac..c78342eac 100644
--- a/cmd/lotus-fountain/site/miner.html
+++ b/cmd/lotus-fountain/site/miner.html
@@ -11,9 +11,14 @@
             [CREATING STORAGE MINER]
         </div>
         <div class="Index-node" id="formnd">
-            <form id="f" action='/mkminer' method='get'>
+            <form id="f" action='/mkminer' method='POST'>
                 <span>Enter destination address:</span>
                 <input type='text' name='address' style="width: 300px">
+                <select name="sectorSize">
+                    <option selected value="1073741824">1GiB sectors</option>
+                    <option value="268435456">256MiB sectors</option>
+                    <option value="16777216">16MiB sectors</option>
+                </select>
                 <button type='submit'>Create Miner</button>
             </form>
         </div>