diff --git a/code/ryzom/tools/client/client_patcher/CMakeLists.txt b/code/ryzom/tools/client/client_patcher/CMakeLists.txt
index 70857105e..47178d456 100644
--- a/code/ryzom/tools/client/client_patcher/CMakeLists.txt
+++ b/code/ryzom/tools/client/client_patcher/CMakeLists.txt
@@ -1,5 +1,6 @@
 FILE(GLOB SRC main.cpp
 	${CMAKE_SOURCE_DIR}/ryzom/client/src/app_bundle_utils.cpp
+	${CMAKE_SOURCE_DIR}/ryzom/client/src/user_agent.cpp
 	${CMAKE_SOURCE_DIR}/ryzom/client/src/client_cfg.cpp
 	${CMAKE_SOURCE_DIR}/ryzom/client/src/login_patch.cpp
 	${CMAKE_SOURCE_DIR}/ryzom/client/src/login_xdelta.cpp