diff --git a/src/proto/os_vms.pro b/src/proto/os_vms.pro
new file mode 100644
index 0000000..2ed6394
--- /dev/null
+++ b/src/proto/os_vms.pro
@@ -0,0 +1,14 @@
+/* os_vms.c */
+void mch_settmode __ARGS((int tmode));
+int mch_get_shellsize __ARGS((void));
+void mch_set_shellsize __ARGS((void));
+char_u *mch_getenv __ARGS((char_u *lognam));
+int mch_setenv __ARGS((char *var, char *value, int x));
+int vms_sys __ARGS((char *cmd, char *out, char *inp));
+int vms_sys_status __ARGS((int status));
+int vms_read __ARGS((char *inbuf, size_t nbytes));
+int mch_expand_wildcards __ARGS((int num_pat, char_u **pat, int *num_file, char_u ***file, int flags));
+int mch_expandpath __ARGS((garray_T *gap, char_u *path, int flags));
+void *vms_fixfilename __ARGS((void *instring));
+void vms_remove_version __ARGS((void *fname));
+/* vim: set ft=c : */