diff --git a/SConstruct b/SConstruct
index ae3df10bc..5ab3cdf48 100644
--- a/SConstruct
+++ b/SConstruct
@@ -32,7 +32,7 @@ elif os.environ.has_key('BOOST_INCLUDES') and os.environ.has_key('BOOST_LIBS'):
    env['BOOST_INCLUDES'] = os.environ['BOOST_INCLUDES']
    env['BOOST_LIBS'] = os.environ['BOOST_LIBS']
 else:
-   raise SCons.Errors.UserError, "Neither BOOST_ROOT, nor BOOST_INCLUDES + BOOST_LIBS was set!"
+   raise SCons.Errors.UserError("Neither BOOST_ROOT, nor BOOST_INCLUDES + BOOST_LIBS was set!")
 
 ## Custom OpenSSL
 if os.environ.has_key('OPENSSL_PATH'):