diff --git a/src/proto/cmdexpand.pro b/src/proto/cmdexpand.pro
index 92e9dcb..2b2cc23 100644
--- a/src/proto/cmdexpand.pro
+++ b/src/proto/cmdexpand.pro
@@ -24,5 +24,6 @@
 int wildmenu_process_key(cmdline_info_T *cclp, int key, expand_T *xp);
 void wildmenu_cleanup(cmdline_info_T *cclp);
 void f_getcompletion(typval_T *argvars, typval_T *rettv);
+void f_getcompletiontype(typval_T *argvars, typval_T *rettv);
 void f_cmdcomplete_info(typval_T *argvars UNUSED, typval_T *rettv);
 /* vim: set ft=c : */