diff --git a/Lib/optparse.py b/Lib/optparse.py index b89a6ce7dfb8..bacef0f311bb 100644 --- a/Lib/optparse.py +++ b/Lib/optparse.py @@ -1033,7 +1033,7 @@ def set_usage (self, usage): self.usage = "%prog [options]" elif usage is SUPPRESS_USAGE: self.usage = None - elif usage.startswith("usage: "): + elif usage.lower().startswith("usage: "): # for backwards compatibility with Optik 1.3 and earlier self.usage = usage[7:] else: