some RiscOS stuff I missed before (was only looking for "RISCOS")
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 9093965..15c6e9c 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -3,7 +3,7 @@
 import signal
 import os, sys, time
 
-if sys.platform[:3] in ('win', 'os2') or sys.platform=='riscos':
+if sys.platform[:3] in ('win', 'os2'):
     raise TestSkipped, "Can't test signal on %s" % sys.platform
 
 MAX_DURATION = 20   # Entire test should last at most 20 sec.