diff --git a/subprojects/gstreamer/gst/gstsample.c b/subprojects/gstreamer/gst/gstsample.c
index eb4bf7b701..b8af1a3432 100644
--- a/subprojects/gstreamer/gst/gstsample.c
+++ b/subprojects/gstreamer/gst/gstsample.c
@@ -463,18 +463,19 @@ gst_sample_unref (GstSample * sample)
 
 /**
  * gst_sample_copy: (skip)
- * @buf: a #GstSample.
+ * @sample: a #GstSample.
  *
  * Create a copy of the given sample. This will also make a newly allocated
  * copy of the data the source sample contains.
  *
- * Returns: (transfer full): a new copy of @buf.
+ * Returns: (transfer full): a new copy of @sample.
  *
  * Since: 1.2
  */
 GstSample *
-gst_sample_copy (const GstSample * buf)
+gst_sample_copy (const GstSample * sample)
 {
   return
-      GST_SAMPLE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (buf)));
+      GST_SAMPLE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST
+          (sample)));
 }
diff --git a/subprojects/gstreamer/gst/gstsample.h b/subprojects/gstreamer/gst/gstsample.h
index e3023b097c..ab83143d2b 100644
--- a/subprojects/gstreamer/gst/gstsample.h
+++ b/subprojects/gstreamer/gst/gstsample.h
@@ -150,13 +150,13 @@ void        gst_sample_unref  (GstSample * sample);
 #ifndef GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS
 /* copy sample */
 static inline GstSample *
-gst_sample_copy (const GstSample * buf)
+gst_sample_copy (const GstSample * sample)
 {
-  return GST_SAMPLE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (buf)));
+  return GST_SAMPLE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (sample)));
 }
 #else /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
 GST_API
-GstSample *   gst_sample_copy(const GstSample * buf);
+GstSample *   gst_sample_copy (const GstSample * sample);
 #endif /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
 
 /**