diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index 9c94a311..f7dc4c7c 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -36,6 +36,7 @@ SET (sems_SRCS
  AmSession.cpp
  AmSessionContainer.cpp
  AmSessionEventHandler.cpp
+ AmSessionProcessor.cpp
  AmSipDialog.cpp
  AmSipDispatcher.cpp
  AmSipMsg.cpp