diff --git a/trunk/src/core/srs_core_performance.cpp b/trunk/src/core/srs_core_performance.cpp
index 28ebf57a1..9e9f58799 100644
--- a/trunk/src/core/srs_core_performance.cpp
+++ b/trunk/src/core/srs_core_performance.cpp
@@ -21,7 +21,5 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <srs_core.hpp>
-
 #include <srs_core_performance.hpp>
 
diff --git a/trunk/src/core/srs_core_performance.hpp b/trunk/src/core/srs_core_performance.hpp
index 4c36b263a..4e2f33888 100644
--- a/trunk/src/core/srs_core_performance.hpp
+++ b/trunk/src/core/srs_core_performance.hpp
@@ -24,6 +24,8 @@
 #ifndef SRS_CORE_PERFORMANCE_HPP
 #define SRS_CORE_PERFORMANCE_HPP
 
+#include <srs_core.hpp>
+
 /**
  * this file defines the perfromance options.
  */
diff --git a/trunk/src/core/srs_core_time.cpp b/trunk/src/core/srs_core_time.cpp
index 749fb99c8..32ee3208c 100644
--- a/trunk/src/core/srs_core_time.cpp
+++ b/trunk/src/core/srs_core_time.cpp
@@ -21,7 +21,5 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <srs_core.hpp>
-
 #include <srs_core_time.hpp>
 
diff --git a/trunk/src/core/srs_core_time.hpp b/trunk/src/core/srs_core_time.hpp
index 2713d41f8..f9f7bdd5c 100644
--- a/trunk/src/core/srs_core_time.hpp
+++ b/trunk/src/core/srs_core_time.hpp
@@ -24,6 +24,8 @@
 #ifndef SRS_CORE_TIME_HPP
 #define SRS_CORE_TIME_HPP
 
+#include <srs_core.hpp>
+
 // Time and duration unit, in us.
 typedef int64_t srs_utime_t;