diff --git a/gst-libs/gst/audio/gstaudiostreamalign.c b/gst-libs/gst/audio/gstaudiostreamalign.c
index 3eaa74bc97..ec4233d4ee 100644
--- a/gst-libs/gst/audio/gstaudiostreamalign.c
+++ b/gst-libs/gst/audio/gstaudiostreamalign.c
@@ -172,7 +172,7 @@ gst_audio_stream_align_set_rate (GstAudioStreamAlign * align, gint rate)
  * Since: 1.14
  */
 gint
-gst_audio_stream_align_get_rate (GstAudioStreamAlign * align)
+gst_audio_stream_align_get_rate (const GstAudioStreamAlign * align)
 {
   g_return_val_if_fail (align != NULL, 0);
 
@@ -208,7 +208,8 @@ gst_audio_stream_align_set_alignment_threshold (GstAudioStreamAlign *
  * Since: 1.14
  */
 GstClockTime
-gst_audio_stream_align_get_alignment_threshold (GstAudioStreamAlign * align)
+gst_audio_stream_align_get_alignment_threshold (const GstAudioStreamAlign *
+    align)
 {
   g_return_val_if_fail (align != NULL, 0);
 
@@ -244,7 +245,7 @@ gst_audio_stream_align_set_discont_wait (GstAudioStreamAlign * align,
  * Since: 1.14
  */
 GstClockTime
-gst_audio_stream_align_get_discont_wait (GstAudioStreamAlign * align)
+gst_audio_stream_align_get_discont_wait (const GstAudioStreamAlign * align)
 {
   g_return_val_if_fail (align != NULL, 0);
 
@@ -280,7 +281,8 @@ gst_audio_stream_align_mark_discont (GstAudioStreamAlign * align)
  * Since: 1.14
  */
 GstClockTime
-gst_audio_stream_align_get_timestamp_at_discont (GstAudioStreamAlign * align)
+gst_audio_stream_align_get_timestamp_at_discont (const GstAudioStreamAlign *
+    align)
 {
   g_return_val_if_fail (align != NULL, GST_CLOCK_TIME_NONE);
 
@@ -299,7 +301,8 @@ gst_audio_stream_align_get_timestamp_at_discont (GstAudioStreamAlign * align)
  * Since: 1.14
  */
 guint64
-gst_audio_stream_align_get_samples_since_discont (GstAudioStreamAlign * align)
+gst_audio_stream_align_get_samples_since_discont (const GstAudioStreamAlign *
+    align)
 {
   g_return_val_if_fail (align != NULL, 0);
 
diff --git a/gst-libs/gst/audio/gstaudiostreamalign.h b/gst-libs/gst/audio/gstaudiostreamalign.h
index 80b83f927d..080e9ea44b 100644
--- a/gst-libs/gst/audio/gstaudiostreamalign.h
+++ b/gst-libs/gst/audio/gstaudiostreamalign.h
@@ -54,29 +54,29 @@ GST_AUDIO_API
 void                    gst_audio_stream_align_set_rate                  (GstAudioStreamAlign * align,
                                                                           gint rate);
 GST_AUDIO_API
-gint                    gst_audio_stream_align_get_rate                  (GstAudioStreamAlign * align);
+gint                    gst_audio_stream_align_get_rate                  (const GstAudioStreamAlign * align);
 
 GST_AUDIO_API
 void                    gst_audio_stream_align_set_alignment_threshold   (GstAudioStreamAlign * align,
                                                                           GstClockTime alignment_threshold);
 GST_AUDIO_API
-GstClockTime            gst_audio_stream_align_get_alignment_threshold   (GstAudioStreamAlign * align);
+GstClockTime            gst_audio_stream_align_get_alignment_threshold   (const GstAudioStreamAlign * align);
 
 GST_AUDIO_API
 void                    gst_audio_stream_align_set_discont_wait          (GstAudioStreamAlign * align,
                                                                           GstClockTime discont_wait);
 GST_AUDIO_API
-GstClockTime            gst_audio_stream_align_get_discont_wait          (GstAudioStreamAlign * align);
+GstClockTime            gst_audio_stream_align_get_discont_wait          (const GstAudioStreamAlign * align);
 
 
 GST_AUDIO_API
 void                    gst_audio_stream_align_mark_discont              (GstAudioStreamAlign * align);
 
 GST_AUDIO_API
-GstClockTime            gst_audio_stream_align_get_timestamp_at_discont  (GstAudioStreamAlign * align);
+GstClockTime            gst_audio_stream_align_get_timestamp_at_discont  (const GstAudioStreamAlign * align);
 
 GST_AUDIO_API
-guint64                 gst_audio_stream_align_get_samples_since_discont (GstAudioStreamAlign * align);
+guint64                 gst_audio_stream_align_get_samples_since_discont (const GstAudioStreamAlign * align);
 
 GST_AUDIO_API
 gboolean                gst_audio_stream_align_process                   (GstAudioStreamAlign * align,