diff --git a/music-config/config.py b/music-config/config.py
index e7a3b81722ba1f18f534d4031ec0cd8c90ceb1cd..e749653f71758d729115b8aee104256e401dcf27 100644
--- a/music-config/config.py
+++ b/music-config/config.py
@@ -60,8 +60,7 @@ def postponeSetup ():
     the first port.  Must be called before creation of MUSIC::Setup.
     """
     if not thisApp:
-        raise RuntimeError, \
-              'must define Application before calling postponeSetup ()'
+        raise RuntimeError('must define Application before calling postponeSetup ()')
     os.environ[CONFIGVARNAME] = 'POSTPONE:' + str (thisApp.number)