diff --git a/glib/option.py b/glib/option.py
index 027752f..9011db0 100644
--- a/glib/option.py
+++ b/glib/option.py
@@ -42,7 +42,7 @@ __all__ = [
     "OptionError",
     "OptionValueError",
     "BadOptionError",
-    "OptionConflictError"
+    "OptionConflictError",
     "Option",
     "OptionGroup",
     "OptionParser",
