diff --git a/pcbnew/files.cpp b/pcbnew/files.cpp
index 912c4b2aab..3c4f644a5b 100644
--- a/pcbnew/files.cpp
+++ b/pcbnew/files.cpp
@@ -34,7 +34,8 @@
 #include <kiface_base.h>
 #include <macros.h>
 #include <trace_helpers.h>
-#include <lockfile.cpp>
+#include <lockfile.h>
+#include <wx/snglinst.h>
 #include <netlist_reader/pcb_netlist.h>
 #include <pcbnew_id.h>
 #include <io_mgr.h>