diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 2b912d6..5319449 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -336,6 +336,8 @@
 # define ex_endfunction		ex_ni
 # define ex_let			ex_ni
 # define ex_unlet		ex_ni
+# define ex_lockvar		ex_ni
+# define ex_unlockvar		ex_ni
 # define ex_function		ex_ni
 # define ex_delfunction		ex_ni
 # define ex_return		ex_ni