diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 62dab070e3..96046af916 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -708,6 +708,8 @@ add_library(core STATIC
     hle/service/kernel_helpers.h
     hle/service/lbl/lbl.cpp
     hle/service/lbl/lbl.h
+    hle/service/ldn/client_process_monitor.cpp
+    hle/service/ldn/client_process_monitor.h
     hle/service/ldn/lan_discovery.cpp
     hle/service/ldn/lan_discovery.h
     hle/service/ldn/ldn.cpp