diff --git a/girs/GstApp-1.0.gir b/girs/GstApp-1.0.gir
index e233663eec..fb8d58387c 100644
--- a/girs/GstApp-1.0.gir
+++ b/girs/GstApp-1.0.gir
@@ -870,7 +870,7 @@ If an EOS event was received before any buffers, this function returns
 This function blocks until a preroll sample or EOS is received or the appsink
 element is set to the READY/NULL state.</doc>
         <return-value transfer-ownership="full" nullable="1">
-          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or NULL when the appsink is stopped or EOS.</doc>
+          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or %NULL when the appsink is stopped or EOS.</doc>
           <type name="Gst.Sample"/>
         </return-value>
       </glib:signal>
@@ -890,7 +890,7 @@ the "drop" and "max-buffers" properties.
 If an EOS event was received before any buffers, this function returns
 %NULL. Use gst_app_sink_is_eos () to check for the EOS condition.</doc>
         <return-value transfer-ownership="full" nullable="1">
-          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or NULL when the appsink is stopped or EOS.</doc>
+          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or %NULL when the appsink is stopped or EOS.</doc>
           <type name="Gst.Sample"/>
         </return-value>
       </glib:signal>
@@ -949,7 +949,8 @@ condition.
 This function blocks until a preroll sample or EOS is received, the appsink
 element is set to the READY/NULL state, or the timeout expires.</doc>
         <return-value transfer-ownership="full" nullable="1">
-          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or NULL when the appsink is stopped or EOS or the timeout expires.</doc>
+          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c">a #GstSample or %NULL when the appsink
+is stopped or EOS or the timeout expires.</doc>
           <type name="Gst.Sample"/>
         </return-value>
         <parameters>
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c b/subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c
index 28da39381d..912a3a9eb4 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/app/gstappsink.c
@@ -405,7 +405,7 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
    * This function blocks until a preroll sample or EOS is received or the appsink
    * element is set to the READY/NULL state.
    *
-   * Returns: (nullable): a #GstSample or NULL when the appsink is stopped or EOS.
+   * Returns: (nullable) (transfer full): a #GstSample or %NULL when the appsink is stopped or EOS.
    */
   gst_app_sink_signals[SIGNAL_PULL_PREROLL] =
       g_signal_new ("pull-preroll", G_TYPE_FROM_CLASS (klass),
@@ -430,7 +430,7 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
    * If an EOS event was received before any buffers, this function returns
    * %NULL. Use gst_app_sink_is_eos () to check for the EOS condition.
    *
-   * Returns: (nullable): a #GstSample or NULL when the appsink is stopped or EOS.
+   * Returns: (nullable) (transfer full): a #GstSample or %NULL when the appsink is stopped or EOS.
    */
   gst_app_sink_signals[SIGNAL_PULL_SAMPLE] =
       g_signal_new ("pull-sample", G_TYPE_FROM_CLASS (klass),
@@ -462,7 +462,8 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
    * This function blocks until a preroll sample or EOS is received, the appsink
    * element is set to the READY/NULL state, or the timeout expires.
    *
-   * Returns: (nullable): a #GstSample or NULL when the appsink is stopped or EOS or the timeout expires.
+   * Returns: (nullable) (transfer full): a #GstSample or %NULL when the appsink
+   * is stopped or EOS or the timeout expires.
    *
    * Since: 1.10
    */