diff --git a/src/plugins/screencast/screencaststream.cpp b/src/plugins/screencast/screencaststream.cpp
index 114f2d5c14..debd5d64ab 100644
--- a/src/plugins/screencast/screencaststream.cpp
+++ b/src/plugins/screencast/screencaststream.cpp
@@ -207,6 +207,7 @@ void ScreenCastStream::onStreamParamChanged(uint32_t id, const struct spa_pod *f
 
     qCDebug(KWIN_SCREENCAST) << "Stream format found, defining buffers";
     newStreamParams();
+    m_streaming = true;
 }
 
 void ScreenCastStream::onStreamAddBuffer(pw_buffer *buffer)