Fix doctests.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 600dc08..7a99d71 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ extra_options = {
 
 if PY3:
     extra_options["use_2to3"] = True
-    if "test" in sys.argv:
+    if "test" in sys.argv or "develop" in sys.argv:
         for root, directories, files in os.walk("tests"):
             for directory in directories:
                 extra_options["packages"].append(os.path.join(root, directory))