1 files changed, 1 insertions, 1 deletions
diff --git a/gio/gio.defs b/gio/gio.defs
index ac9309f..dcf3156 100644
--- a/gio/gio.defs
+++ b/gio/gio.defs
@@ -3015,7 +3015,7 @@
   (return-type "GFileIOStream*")
   (parameters
     '("GFileCreateFlags" "flags")
-    '("GCancellable*" "cancellable")
+    '("GCancellable*" "cancellable" (null-ok) (default "NULL"))
     '("GError**" "error")
   )
 )