diff --git a/tox.ini b/tox.ini
index ff14e97..677b1ce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,11 +3,11 @@ envlist = py26, py27, py32, py33
 
 [testenv]
 setenv =
-    # The following two flags are a workaround for an issue with building
-    # Python extensions on OSX with xcode 5.1.
-    # See: http://stackoverflow.com/questions/22313407/
-    CFLAGS=-Qunused-arguments
-    CPPFLAGS=-Qunused-arguments
+    ; The following two flags are a workaround for an issue with building
+    ; Python extensions on OSX with xcode 5.1.
+    ; See: http://stackoverflow.com/questions/22313407/
+;    CFLAGS=-Qunused-arguments
+;    CPPFLAGS=-Qunused-arguments
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test_requirements.txt