diff --git a/trunk/src/app/srs_app_rtc_source.cpp b/trunk/src/app/srs_app_rtc_source.cpp
index e0acd57e1..211f518a8 100644
--- a/trunk/src/app/srs_app_rtc_source.cpp
+++ b/trunk/src/app/srs_app_rtc_source.cpp
@@ -33,10 +33,13 @@
 #include <srs_kernel_utility.hpp>
 #include <srs_protocol_format.hpp>
 #include <srs_kernel_buffer.hpp>
-#include <srs_app_rtc_codec.hpp>
 #include <srs_kernel_rtc_rtp.hpp>
 #include <srs_core_autofree.hpp>
 
+#ifdef SRS_FFMPEG_FIT
+#include <srs_app_rtc_codec.hpp>
+#endif
+
 const int kChannel              = 2;
 const int kSamplerate           = 48000;