diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 298171324..76cc58de8 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -290,14 +290,14 @@ ISrsRtcPLIWorkerHandler::~ISrsRtcPLIWorkerHandler()
 {
 }
 
-ISrsRtcPLIWorker::ISrsRtcPLIWorker(ISrsRtcPLIWorkerHandler* h)
+SrsRtcPLIWorker::SrsRtcPLIWorker(ISrsRtcPLIWorkerHandler* h)
 {
     handler_ = h;
     wait_ = srs_cond_new();
     trd_ = new SrsSTCoroutine("pli", this, _srs_context->get_id());
 }
 
-ISrsRtcPLIWorker::~ISrsRtcPLIWorker()
+SrsRtcPLIWorker::~SrsRtcPLIWorker()
 {
     srs_cond_signal(wait_);
     trd_->stop();
@@ -306,7 +306,7 @@ ISrsRtcPLIWorker::~ISrsRtcPLIWorker()
     srs_cond_destroy(wait_);
 }
 
-srs_error_t ISrsRtcPLIWorker::start()
+srs_error_t SrsRtcPLIWorker::start()
 {
     srs_error_t err = srs_success;
 
@@ -317,13 +317,13 @@ srs_error_t ISrsRtcPLIWorker::start()
     return err;
 }
 
-void ISrsRtcPLIWorker::request_keyframe(uint32_t ssrc, SrsContextId cid)
+void SrsRtcPLIWorker::request_keyframe(uint32_t ssrc, SrsContextId cid)
 {
     plis_.insert(make_pair(ssrc, cid));
     srs_cond_signal(wait_);
 }
 
-srs_error_t ISrsRtcPLIWorker::cycle()
+srs_error_t SrsRtcPLIWorker::cycle()
 {
     srs_error_t err = srs_success;
 
@@ -383,7 +383,7 @@ SrsRtcPlayStream::SrsRtcPlayStream(SrsRtcConnection* s, const SrsContextId& cid)
     _srs_config->subscribe(this);
     timer_ = new SrsHourGlass(this, 1000 * SRS_UTIME_MILLISECONDS);
     nack_epp = new SrsErrorPithyPrint();
-    pli_worker_ = new ISrsRtcPLIWorker(this);
+    pli_worker_ = new SrsRtcPLIWorker(this);
 }
 
 SrsRtcPlayStream::~SrsRtcPlayStream()
@@ -909,8 +909,8 @@ SrsRtcPublishStream::SrsRtcPublishStream(SrsRtcConnection* session, const SrsCon
     nn_audio_frames = 0;
     twcc_id_ = 0;
     twcc_fb_count_ = 0;
-
-    pli_worker_ = new ISrsRtcPLIWorker(this);
+    
+    pli_worker_ = new SrsRtcPLIWorker(this);
 }
 
 SrsRtcPublishStream::~SrsRtcPublishStream()
diff --git a/trunk/src/app/srs_app_rtc_conn.hpp b/trunk/src/app/srs_app_rtc_conn.hpp
index c414d09a9..3c780ae73 100644
--- a/trunk/src/app/srs_app_rtc_conn.hpp
+++ b/trunk/src/app/srs_app_rtc_conn.hpp
@@ -186,7 +186,7 @@ public:
 };
 
 // A worker coroutine to request the PLI.
-class ISrsRtcPLIWorker : virtual public ISrsCoroutineHandler
+class SrsRtcPLIWorker : virtual public ISrsCoroutineHandler
 {
 private:
     SrsCoroutine* trd_;
@@ -196,8 +196,8 @@ private:
     // Key is SSRC, value is the CID of subscriber which requests PLI.
     std::map<uint32_t, SrsContextId> plis_;
 public:
-    ISrsRtcPLIWorker(ISrsRtcPLIWorkerHandler* h);
-    virtual ~ISrsRtcPLIWorker();
+    SrsRtcPLIWorker(ISrsRtcPLIWorkerHandler* h);
+    virtual ~SrsRtcPLIWorker();
 public:
     virtual srs_error_t start();
     virtual void request_keyframe(uint32_t ssrc, SrsContextId cid);
@@ -246,7 +246,7 @@ private:
     SrsContextId cid_;
     SrsCoroutine* trd;
     SrsRtcConnection* session_;
-    ISrsRtcPLIWorker* pli_worker_;
+    SrsRtcPLIWorker* pli_worker_;
 private:
     SrsRequest* req_;
     SrsRtcStream* source_;
@@ -312,7 +312,7 @@ private:
     SrsContextId cid_;
     SrsHourGlass* timer_;
     uint64_t nn_audio_frames;
-    ISrsRtcPLIWorker* pli_worker_;
+    SrsRtcPLIWorker* pli_worker_;
 private:
     SrsRtcConnection* session_;
     uint16_t pt_to_drop_;