diff --git a/src/threading/CMakeLists.txt b/src/threading/CMakeLists.txt
index d7549fe02..8f86158be 100644
--- a/src/threading/CMakeLists.txt
+++ b/src/threading/CMakeLists.txt
@@ -2,6 +2,5 @@ set(JTHREAD_SRCS
 	${CMAKE_CURRENT_SOURCE_DIR}/event.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/thread.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/semaphore.cpp
-	${CMAKE_CURRENT_SOURCE_DIR}/lock.cpp
 	PARENT_SCOPE)