diff --git a/trunk/src/service/srs_service_http_client.hpp b/trunk/src/service/srs_service_http_client.hpp
index 9c07dd817..9781cbced 100644
--- a/trunk/src/service/srs_service_http_client.hpp
+++ b/trunk/src/service/srs_service_http_client.hpp
@@ -41,7 +41,7 @@ class SrsWallClock;
 class SrsTcpClient;
 
 // The default timeout for http client.
-#define SRS_HTTP_CLIENT_TIMEOUT (30// SRS_UTIME_SECONDS)
+#define SRS_HTTP_CLIENT_TIMEOUT (30 * SRS_UTIME_SECONDS)
 
 // The client to GET/POST/PUT/DELETE over HTTP.
 // @remark We will reuse the TCP transport until initialize or channel error,
diff --git a/trunk/src/service/srs_service_st.hpp b/trunk/src/service/srs_service_st.hpp
index f6843c8ac..7c1bcba2c 100644
--- a/trunk/src/service/srs_service_st.hpp
+++ b/trunk/src/service/srs_service_st.hpp
@@ -140,7 +140,7 @@ public:
 // The client to connect to server over TCP.
 // User must never reuse the client when close it.
 // Usage:
-//      SrsTcpClient client("127.0.0.1", 1935, 9// SRS_UTIME_SECONDS);
+//      SrsTcpClient client("127.0.0.1", 1935, 9 * SRS_UTIME_SECONDS);
 //      client.connect();
 //      client.write("Hello world!", 12, NULL);
 //      client.read(buf, 4096, NULL);