diff --git a/setup.py b/setup.py
index de5be628..9b4a6e01 100644
--- a/setup.py
+++ b/setup.py
@@ -121,7 +121,7 @@ def extract_version(CYTHON_FNAME):
     ],
     ext_modules=[redtoregext, pygribext],
     data_files=data_files,
-    setup_requires=["setuptools, cython"],
+    setup_requires=["setuptools", "cython"],
     install_requires=[
         "pyproj",
         "numpy",