diff --git a/trunk/src/core/srs_core_protocol.hpp b/trunk/src/core/srs_core_protocol.hpp
index 68b77c7f1..069e90a04 100644
--- a/trunk/src/core/srs_core_protocol.hpp
+++ b/trunk/src/core/srs_core_protocol.hpp
@@ -41,39 +41,39 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 // when got a messae header, there must be some data,
 // increase recv timeout to got an entire message.
-#define SRS_MIN_RECV_TIMEOUT_US 60*1000*1000L
+#define SRS_MIN_RECV_TIMEOUT_US 60*1000*1000LL
 
 // the timeout to wait for client control message,
 // if timeout, we generally ignore and send the data to client,
 // generally, it's the pulse time for data seding.
-#define SRS_PULSE_TIMEOUT_US 200*1000L
+#define SRS_PULSE_TIMEOUT_US 200*1000LL
 
 // the timeout to wait client data,
 // if timeout, close the connection.
-#define SRS_SEND_TIMEOUT_US 30*1000*1000L
+#define SRS_SEND_TIMEOUT_US 30*1000*1000LL
 
 // the timeout to send data to client,
 // if timeout, close the connection.
-#define SRS_RECV_TIMEOUT_US 30*1000*1000L
+#define SRS_RECV_TIMEOUT_US 30*1000*1000LL
 
 // the timeout to wait client data, when client paused
 // if timeout, close the connection.
-#define SRS_PAUSED_SEND_TIMEOUT_US 30*60*1000*1000L
+#define SRS_PAUSED_SEND_TIMEOUT_US 30*60*1000*1000LL
 
 // the timeout to send data to client, when client paused
 // if timeout, close the connection.
-#define SRS_PAUSED_RECV_TIMEOUT_US 30*60*1000*1000L
+#define SRS_PAUSED_RECV_TIMEOUT_US 30*60*1000*1000LL
 
 // when stream is busy, for example, streaming is already
 // publishing, when a new client to request to publish,
 // sleep a while and close the connection.
-#define SRS_STREAM_BUSY_SLEEP_US 3*1000*1000L
+#define SRS_STREAM_BUSY_SLEEP_US 3*1000*1000LL
 
 // when error, forwarder sleep for a while and retry.
-#define SRS_FORWARDER_SLEEP_US 3*1000*1000L
+#define SRS_FORWARDER_SLEEP_US 3*1000*1000LL
 
 // when error, encoder sleep for a while and retry.
-#define SRS_ENCODER_SLEEP_US 3*1000*1000L
+#define SRS_ENCODER_SLEEP_US 3*1000*1000LL
 
 class SrsSocket;
 class SrsBuffer;