diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 5a4e32ab42..1fd5788385 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -1183,20 +1183,20 @@ srs_error_t SrsRtcPublishStream::initialize(SrsRequest* r, SrsRtcSourceDescripti
     }
     source->set_publish_stream(this);
 
+    // TODO: FIMXE: Check it in SrsRtcConnection::add_publisher?
+    SrsLiveSource *rtmp = _srs_sources->fetch(r);
+    if (rtmp && !rtmp->can_publish(false)) {
+        return srs_error_new(ERROR_SYSTEM_STREAM_BUSY, "rtmp stream %s busy", r->get_stream_url().c_str());
+    }
+
     // Bridge to rtmp
 #if defined(SRS_RTC) && defined(SRS_FFMPEG_FIT)
     bool rtc_to_rtmp = _srs_config->get_rtc_to_rtmp(req_->vhost);
     if (rtc_to_rtmp) {
-        SrsLiveSource *rtmp = NULL;
         if ((err = _srs_sources->fetch_or_create(r, _srs_hybrid->srs()->instance(), &rtmp)) != srs_success) {
             return srs_error_wrap(err, "create source");
         }
 
-        // TODO: FIMXE: Check it in SrsRtcConnection::add_publisher?
-        if (!rtmp->can_publish(false)) {
-            return srs_error_new(ERROR_SYSTEM_STREAM_BUSY, "rtmp stream %s busy", r->get_stream_url().c_str());
-        }
-
         // Disable GOP cache for RTC2RTMP bridger, to keep the streams in sync,
         // especially for stream merging.
         rtmp->set_cache(false);