Experimentally fix syntax
diff --git a/setup.py b/setup.py
index 6699263..2f73e94 100644
--- a/setup.py
+++ b/setup.py
@@ -84,8 +84,8 @@
 
 DEFINE_MACROS = (('OPENSSL_NO_ASM', 1),)
 
-CFLAGS = (,)
-LDFLAGS = (,)
+CFLAGS = ()
+LDFLAGS = ()
 if "linux" in sys.platform:
   LDFLAGS += ('-Wl,-wrap,memcpy',)
 if "linux" in sys.platform or "darwin" in sys.platform: