diff --git a/ext/pulse/pulsesink.c b/ext/pulse/pulsesink.c
index 521c4a6..931f1c8 100644
--- a/ext/pulse/pulsesink.c
+++ b/ext/pulse/pulsesink.c
@@ -2022,6 +2022,13 @@
   }
 
   pa_threaded_mainloop_lock (mainloop);
+
+  /* Need to check if pa stream is valid as it may be released by caps change*/
+  if (!pbuf->stream) {
+    pa_threaded_mainloop_unlock (mainloop);
+    return GST_CLOCK_TIME_NONE;
+  }
+
   if (gst_pulsering_is_dead (psink, pbuf, TRUE))
     goto server_dead;