diff --git a/libs/gst/base/gstaggregator.c b/libs/gst/base/gstaggregator.c
index 568e3771fe..a4c00ca673 100644
--- a/libs/gst/base/gstaggregator.c
+++ b/libs/gst/base/gstaggregator.c
@@ -3474,7 +3474,7 @@ gst_aggregator_simple_get_next_time (GstAggregator * self)
  * Since: 1.18
  */
 void
-gst_aggregator_update_segment (GstAggregator * self, GstSegment * segment)
+gst_aggregator_update_segment (GstAggregator * self, const GstSegment * segment)
 {
   g_return_if_fail (GST_IS_AGGREGATOR (self));
   g_return_if_fail (segment != NULL);
diff --git a/libs/gst/base/gstaggregator.h b/libs/gst/base/gstaggregator.h
index c5cc838c84..825922cb18 100644
--- a/libs/gst/base/gstaggregator.h
+++ b/libs/gst/base/gstaggregator.h
@@ -387,7 +387,7 @@ GstClockTime    gst_aggregator_simple_get_next_time (GstAggregator
 
 GST_BASE_API
 void            gst_aggregator_update_segment       (GstAggregator                * self,
-                                                     GstSegment                   * segment);
+                                                     const GstSegment             * segment);
 
 G_END_DECLS