diff --git a/gst-libs/gst/video/gstvideoaffinetransformationmeta.c b/gst-libs/gst/video/gstvideoaffinetransformationmeta.c
index 5e3e4d818b..083d1c4f69 100644
--- a/gst-libs/gst/video/gstvideoaffinetransformationmeta.c
+++ b/gst-libs/gst/video/gstvideoaffinetransformationmeta.c
@@ -130,7 +130,8 @@ gst_buffer_add_video_affine_transformation_meta (GstBuffer * buffer)
  * @meta: a #GstVideoAffineTransformationMeta
  * @matrix: a 4x4 transformation matrix to be applied
  *
- * Apply a transformation using the given 4x4 transformation matrix
+ * Apply a transformation using the given 4x4 transformation matrix.
+ * Performs the multiplication, meta->matrix X matrix.
  *
  * Since: 1.8
  */
diff --git a/gst-libs/gst/video/gstvideoaffinetransformationmeta.h b/gst-libs/gst/video/gstvideoaffinetransformationmeta.h
index ba68bd76fe..1f4682cc26 100644
--- a/gst-libs/gst/video/gstvideoaffinetransformationmeta.h
+++ b/gst-libs/gst/video/gstvideoaffinetransformationmeta.h
@@ -37,7 +37,7 @@ typedef gboolean (*GstVideoAffineTransformationGetMatrix) (GstVideoAffineTransfo
 #define GST_BUFFER_POOL_OPTION_VIDEO_AFFINE_TRANSFORMATION_META "GstBufferPoolOptionVideoAffineTransformation"
 
 /**
- * GstVideoAffineTransformation:
+ * GstVideoAffineTransformationMeta:
  * @meta: parent #GstMeta
  * @matrix: the column-major 4x4 transformation matrix
  *
@@ -54,7 +54,6 @@ typedef gboolean (*GstVideoAffineTransformationGetMatrix) (GstVideoAffineTransfo
  *
  * Since: 1.8
  */
-
 struct _GstVideoAffineTransformationMeta
 {
   GstMeta meta;