diff --git a/platforms/posix/src/px4_layer/CMakeLists.txt b/platforms/posix/src/px4_layer/CMakeLists.txt
index 9eebbdfc44..7ce430ae0e 100644
--- a/platforms/posix/src/px4_layer/CMakeLists.txt
+++ b/platforms/posix/src/px4_layer/CMakeLists.txt
@@ -59,7 +59,6 @@ target_link_libraries(px4_layer PRIVATE px4_daemon)
 if(LOCKSTEP_SCHEDULER_NEEDED)
 	target_link_libraries(px4_layer PRIVATE lockstep_scheduler)
 	include_directories(${PX4_SOURCE_DIR}/src/platforms/posix/lockstep_scheduler/include)
-	px4_add_git_submodule(TARGET git_lockstep_scheduler PATH "${PX4_SOURCE_DIR}/src/platforms/posix/lockstep_scheduler")
 endif()