diff --git a/setup.py b/setup.py
index 2c722e99..562252e3 100644
--- a/setup.py
+++ b/setup.py
@@ -58,7 +58,7 @@ if PY2:
     pyversion_install_requires.append('PasteScript')
     pyversion_install_requires.append('Paste')
 else:
-    pyversion_install_requires('gunicorn')
+    pyversion_install_requires.append('gunicorn')
 
 install_requires = [
     'alembic==0.6.6',