diff --git a/controller/dev.go b/controller/dev.go
index ca969ba1..c9f53db8 100644
--- a/controller/dev.go
+++ b/controller/dev.go
@@ -14,6 +14,8 @@ import (
 	"github.com/tidwall/tile38/controller/server"
 )
 
+// MASSINSERT num_keys num_points [minx miny maxx maxy]
+
 const useRandField = true
 
 func randMassInsertPosition(minLat, minLon, maxLat, maxLon float64) (float64, float64) {
diff --git a/controller/scanner.go b/controller/scanner.go
index 54686478..9c742d59 100644
--- a/controller/scanner.go
+++ b/controller/scanner.go
@@ -154,11 +154,17 @@ func (sw *scanWriter) writeFoot(cursor uint64) {
 		sw.wr.WriteString(`,"cursor":` + strconv.FormatUint(cursor, 10))
 	case server.RESP:
 		sw.wr.Reset()
-		values := []resp.Value{
-			resp.IntegerValue(int(cursor)),
-			resp.ArrayValue(sw.values),
+		var data []byte
+		var err error
+		if sw.output == outputCount {
+			data, err = resp.IntegerValue(int(sw.count)).MarshalRESP()
+		} else {
+			values := []resp.Value{
+				resp.IntegerValue(int(cursor)),
+				resp.ArrayValue(sw.values),
+			}
+			data, err = resp.ArrayValue(values).MarshalRESP()
 		}
-		data, err := resp.ArrayValue(values).MarshalRESP()
 		if err != nil {
 			panic("Eek this is bad. Marshal resp should not fail.")
 		}