diff --git a/subprojects/gstreamer/libs/gst/base/gstaggregator.c b/subprojects/gstreamer/libs/gst/base/gstaggregator.c
index c0b71139d6..a6aa43af0c 100644
--- a/subprojects/gstreamer/libs/gst/base/gstaggregator.c
+++ b/subprojects/gstreamer/libs/gst/base/gstaggregator.c
@@ -1927,7 +1927,7 @@ gst_aggregator_default_sink_event_pre_queue (GstAggregator * self,
     SRC_LOCK (self);
     PAD_LOCK (aggpad);
 
-    if (event_type == GST_EVENT_STREAM_START) {
+    if (event_type == GST_EVENT_STREAM_START && priv->running) {
       GstTaskState task_state;
       aggpad->priv->flow_return = GST_FLOW_OK;