diff --git a/girs/Gst-1.0.gir b/girs/Gst-1.0.gir
index 010c4430f2..8fbfcccd4e 100644
--- a/girs/Gst-1.0.gir
+++ b/girs/Gst-1.0.gir
@@ -2494,7 +2494,7 @@ to #GST_CLOCK_TIME_NONE and #GST_BUFFER_OFFSET_NONE.</doc>
               <type name="guint8"/>
             </array>
           </parameter>
-          <parameter name="size" direction="out" caller-allocates="0" transfer-ownership="full">
+          <parameter name="size" transfer-ownership="none">
             <doc xml:space="preserve" filename="../subprojects/gstreamer/gst/gstbuffer.c">the size to extract</doc>
             <type name="gsize" c:type="gsize"/>
           </parameter>
diff --git a/subprojects/gstreamer/gst/gstbuffer.c b/subprojects/gstreamer/gst/gstbuffer.c
index 75b6220ba1..c41189f4e9 100644
--- a/subprojects/gstreamer/gst/gstbuffer.c
+++ b/subprojects/gstreamer/gst/gstbuffer.c
@@ -1986,7 +1986,7 @@ gst_buffer_fill (GstBuffer * buffer, gsize offset, gconstpointer src,
  * @offset: the offset to extract
  * @dest: (out caller-allocates) (array length=size) (element-type guint8):
  *     the destination address
- * @size: the size to extract
+ * @size: (in): the size to extract
  *
  * Copies @size bytes starting from @offset in @buffer to @dest.
  *