diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index 1cd3f4c12b..bdcaadbcfd 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -1086,10 +1086,8 @@ gtk_css_provider_load_internal (GtkCssProvider *self,
 /**
  * gtk_css_provider_load_from_data:
  * @css_provider: a `GtkCssProvider`
- * @data: (array length=length) (element-type guint8): CSS data loaded in memory
- * @length: the length of @data in bytes, or -1 for NUL terminated strings. If
- *   @length is not -1, the code will assume it is not NUL terminated and will
- *   potentially do a copy.
+ * @data: CSS data to be parsed
+ * @length: the length of @data in bytes, or -1 for NUL terminated strings
  *
  * Loads @data into @css_provider.
  *