diff --git a/trunk/src/kernel/srs_kernel_buffer.hpp b/trunk/src/kernel/srs_kernel_buffer.hpp
index 6a3b4c7f3..821adc2b1 100644
--- a/trunk/src/kernel/srs_kernel_buffer.hpp
+++ b/trunk/src/kernel/srs_kernel_buffer.hpp
@@ -127,7 +127,7 @@ public:
     bool require(int required_size);
 public:
     // Skip some size.
-    // @param size can be any value. positive to forward; nagetive to backward.
+    // @param size can be any value. positive to forward; negative to backward.
     // @remark to skip(pos()) to reset buffer.
     // @remark assert initialized, the data() not NULL.
     void skip(int size);