diff --git a/src/py/libcamera/py_camera_manager.cpp b/src/py/libcamera/py_camera_manager.cpp
index 51a890c8..3d422c9e 100644
--- a/src/py/libcamera/py_camera_manager.cpp
+++ b/src/py/libcamera/py_camera_manager.cpp
@@ -22,7 +22,7 @@ PyCameraManager::PyCameraManager()
 
 	cameraManager_ = std::make_unique<CameraManager>();
 
-	int fd = eventfd(0, 0);
+	int fd = eventfd(0, EFD_CLOEXEC);
 	if (fd == -1)
 		throw std::system_error(errno, std::generic_category(),
 					"Failed to create eventfd");