diff --git a/trunk/src/app/srs_app_st.hpp b/trunk/src/app/srs_app_st.hpp
index d4f0ace823..db8a0f2e5b 100644
--- a/trunk/src/app/srs_app_st.hpp
+++ b/trunk/src/app/srs_app_st.hpp
@@ -54,7 +54,7 @@ class ISrsCoroutineHandler
     virtual srs_error_t cycle() = 0;
 };
 
-// Start the object, generally a croutine.
+// Start the object, generally a coroutine.
 class ISrsStartable
 {
 public: