diff --git a/setup.py b/setup.py
index 809c867..b8d712b 100755
--- a/setup.py
+++ b/setup.py
@@ -9,9 +9,9 @@
 
 # if compiling using MSVC, we need to link against user32 library
 if platform.system() == 'Windows':
-    libraries = ('user32',)
+    libraries = ['user32']
 else:
-    libraries = ()
+    libraries = []
 
 if __name__ == '__main__':
     with \