diff --git a/handler.go b/handler.go
index 3e837bef3..c4a98d04c 100644
--- a/handler.go
+++ b/handler.go
@@ -258,6 +258,7 @@ func (h *Handler) handleGetSliceMax(w http.ResponseWriter, r *http.Request) {
 		} else if _, err := w.Write(buf); err != nil {
 			h.logger().Printf("stream write error: %s", err)
 		}
+		return
 	}
 	json.NewEncoder(w).Encode(sliceMaxResponse{
 		MaxSlices: ms,