diff --git a/bazel/ray.bzl b/bazel/ray.bzl
index 92af31621..4a1e4f106 100644
--- a/bazel/ray.bzl
+++ b/bazel/ray.bzl
@@ -1,7 +1,6 @@
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_library_public")
 
-def flatbuffer_py_library(name, srcs, outs, out_prefix, includes = [], include_paths = ""):
-
+def flatbuffer_py_library(name, srcs, outs, out_prefix, includes = [], include_paths = []):
     flatbuffer_library_public(
         name = name,
         srcs = srcs,