diff --git a/src/proto/optionstr.pro b/src/proto/optionstr.pro
index 6fd26ba..c52dbe9 100644
--- a/src/proto/optionstr.pro
+++ b/src/proto/optionstr.pro
@@ -44,6 +44,7 @@
 int expand_set_completeopt(optexpand_T *args, int *numMatches, char_u ***matches);
 char *did_set_completeitemalign(optset_T *args);
 char *did_set_completefuzzycollect(optset_T *args);
+int expand_set_completefuzzycollect(optexpand_T *args, int *numMatches, char_u ***matches);
 char *did_set_completepopup(optset_T *args);
 char *did_set_completeslash(optset_T *args);
 int expand_set_completeslash(optexpand_T *args, int *numMatches, char_u ***matches);