diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 3e08b9e94..8ad0d826a 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -6882,9 +6882,9 @@ bool SrsConfig::get_vhost_http_remux_enabled(string vhost)
     return SRS_CONF_PERFER_FALSE(conf->arg0());
 }
 
-double SrsConfig::get_vhost_http_remux_fast_cache(string vhost)
+srs_utime_t SrsConfig::get_vhost_http_remux_fast_cache(string vhost)
 {
-    static double DEFAULT = 0;
+    static srs_utime_t DEFAULT = 0;
     
     SrsConfDirective* conf = get_vhost(vhost);
     if (!conf) {
@@ -6901,7 +6901,7 @@ double SrsConfig::get_vhost_http_remux_fast_cache(string vhost)
         return DEFAULT;
     }
     
-    return ::atof(conf->arg0().c_str());
+    return srs_utime_t(::atof(conf->arg0().c_str()) * SRS_UTIME_SECONDS);
 }
 
 string SrsConfig::get_vhost_http_remux_mount(string vhost)
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index d45a1b4c6..be985a00a 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -1404,7 +1404,7 @@ public:
     /**
      * get the fast cache duration for http audio live stream.
      */
-    virtual double get_vhost_http_remux_fast_cache(std::string vhost);
+    virtual srs_utime_t get_vhost_http_remux_fast_cache(std::string vhost);
     /**
      * get the http flv live stream mount point for vhost.
      * used to generate the flv stream mount path.
diff --git a/trunk/src/app/srs_app_http_stream.cpp b/trunk/src/app/srs_app_http_stream.cpp
index af8fb1153..3e5551131 100755
--- a/trunk/src/app/srs_app_http_stream.cpp
+++ b/trunk/src/app/srs_app_http_stream.cpp
@@ -64,7 +64,7 @@ SrsBufferCache::SrsBufferCache(SrsSource* s, SrsRequest* r)
     trd = new SrsSTCoroutine("http-stream", this);
     
     // TODO: FIXME: support reload.
-    fast_cache = srs_utime_t(_srs_config->get_vhost_http_remux_fast_cache(req->vhost) * SRS_UTIME_SECONDS);
+    fast_cache = _srs_config->get_vhost_http_remux_fast_cache(req->vhost);
 }
 
 SrsBufferCache::~SrsBufferCache()
diff --git a/trunk/src/utest/srs_utest_config.cpp b/trunk/src/utest/srs_utest_config.cpp
index 8dc37b3d2..4f40459fe 100644
--- a/trunk/src/utest/srs_utest_config.cpp
+++ b/trunk/src/utest/srs_utest_config.cpp
@@ -1898,6 +1898,14 @@ VOID TEST(ConfigUnitTest, CheckDefaultValuesVhost)
 	    EXPECT_EQ(100 * SRS_UTIME_SECONDS, conf.get_queue_length("v"));
 	    EXPECT_EQ(10 * SRS_UTIME_MILLISECONDS, conf.get_send_min_interval("v"));
     }
+
+    if (true) {
+	    EXPECT_TRUE(ERROR_SUCCESS == conf.parse(_MIN_OK_CONF));
+	    EXPECT_EQ(0, conf.get_vhost_http_remux_fast_cache(""));
+
+	    EXPECT_TRUE(ERROR_SUCCESS == conf.parse(_MIN_OK_CONF"vhost v{http_remux{fast_cache 10;}}"));
+	    EXPECT_EQ(10 * SRS_UTIME_SECONDS, conf.get_vhost_http_remux_fast_cache("v"));
+    }
 }
 
 VOID TEST(ConfigUnitTest, CheckDefaultValuesGlobal)