diff --git a/setup.py b/setup.py
index 831b98a..bd0f725 100644
--- a/setup.py
+++ b/setup.py
@@ -65,7 +65,7 @@ def check_dependencies():
     README_content = f.read()
 
 install_requires = check_dependencies()
-install_requires.append(["setuptools",
+install_requires.extend(["setuptools",
                         "decorator",
                         "GoreUtilities == 0.5.0", 
                         "fcsparser>=0.1.1"])