diff --git a/gobject/gvaluetypes.c b/gobject/gvaluetypes.c
index 75998fe7e..a7e086d12 100644
--- a/gobject/gvaluetypes.c
+++ b/gobject/gvaluetypes.c
@@ -1108,7 +1108,7 @@ g_value_set_string_take_ownership (GValue *value,
 /**
  * g_value_take_string:
  * @value: a valid #GValue of type %G_TYPE_STRING
- * @v_string: (nullable): string to take ownership of
+ * @v_string: (nullable) (transfer full): string to take ownership of
  *
  * Sets the contents of a %G_TYPE_STRING #GValue to @v_string.
  *