diff --git a/README.md b/README.md
index 265b51595..b4898a74b 100755
--- a/README.md
+++ b/README.md
@@ -346,6 +346,7 @@ Remark:
 
 ## History
 
+* v2.0, 2017-02-09, fix [#503][bug #503] disable utilities when reload a source. 2.0.233
 * v2.0, 2017-01-22, for [#752][bug #752] release the io then free it for kbps. 2.0.232
 * v2.0, 2017-01-18, fix [#750][bug #750] use specific error code for dns resolve. 2.0.231
 * <strong>v2.0, 2017-01-18, [2.0 beta4(2.0.230)][r2.0b4] released. 86334 lines.</strong>
@@ -1285,6 +1286,7 @@ Winlin
 [bug #749]: https://github.com/ossrs/srs/issues/749
 [bug #750]: https://github.com/ossrs/srs/issues/750
 [bug #752]: https://github.com/ossrs/srs/issues/752
+[bug #503]: https://github.com/ossrs/srs/issues/503
 [bug #xxxxxxxxxx]: https://github.com/ossrs/srs/issues/xxxxxxxxxx
 
 [exo #828]: https://github.com/google/ExoPlayer/pull/828
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 1771bbb28..6657b0adc 100755
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -1227,6 +1227,12 @@ int SrsSource::on_reload_vhost_forward(string vhost)
 
     // forwarders
     destroy_forwarders();
+    
+    // Don't start forwarders when source is not active.
+    if (_can_publish) {
+        return ret;
+    }
+    
     if ((ret = create_forwarders()) != ERROR_SUCCESS) {
         srs_error("create forwarders failed. ret=%d", ret);
         return ret;
@@ -1247,6 +1253,12 @@ int SrsSource::on_reload_vhost_hls(string vhost)
     
 #ifdef SRS_AUTO_HLS
     hls->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (_can_publish) {
+        return ret;
+    }
+    
     if ((ret = hls->on_publish(_req, true)) != ERROR_SUCCESS) {
         srs_error("hls publish failed. ret=%d", ret);
         return ret;
@@ -1267,6 +1279,12 @@ int SrsSource::on_reload_vhost_hds(string vhost)
 
 #ifdef SRS_AUTO_HDS
     hds->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (_can_publish) {
+        return ret;
+    }
+    
     if ((ret = hds->on_publish(_req)) != ERROR_SUCCESS) {
         srs_error("hds publish failed. ret=%d", ret);
         return ret;
@@ -1288,7 +1306,12 @@ int SrsSource::on_reload_vhost_dvr(string vhost)
 #ifdef SRS_AUTO_DVR
     // cleanup dvr
     dvr->on_unpublish();
-
+    
+    // Don't start forwarders when source is not active.
+    if (_can_publish) {
+        return ret;
+    }
+    
     // reinitialize the dvr, update plan.
     if ((ret = dvr->initialize(this, _req)) != ERROR_SUCCESS) {
         return ret;
@@ -1316,6 +1339,12 @@ int SrsSource::on_reload_vhost_transcode(string vhost)
     
 #ifdef SRS_AUTO_TRANSCODE
     encoder->on_unpublish();
+    
+    // Don't start forwarders when source is not active.
+    if (_can_publish) {
+        return ret;
+    }
+    
     if ((ret = encoder->on_publish(_req)) != ERROR_SUCCESS) {
         srs_error("start encoder failed. ret=%d", ret);
         return ret;
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 77ee2d257..7b9c6f907 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    232
+#define VERSION_REVISION    233
 
 // generated by configure, only macros.
 #include <srs_auto_headers.hpp>