diff --git a/trunk/src/kernel/srs_kernel_mp4.cpp b/trunk/src/kernel/srs_kernel_mp4.cpp
index e4c02d92d..9b7c4626b 100644
--- a/trunk/src/kernel/srs_kernel_mp4.cpp
+++ b/trunk/src/kernel/srs_kernel_mp4.cpp
@@ -19,6 +19,11 @@
 #include <iomanip>
 using namespace std;
 
+// For CentOS 6 or C++98, @see https://github.com/ossrs/srs/issues/2815
+#ifndef UINT32_MAX
+#define UINT32_MAX (4294967295U)
+#endif
+
 #define SRS_MP4_EOF_SIZE 0
 #define SRS_MP4_USE_LARGE_SIZE 1