diff --git a/src/proto/spell.pro b/src/proto/spell.pro
index 9fc7a74..d94b959 100644
--- a/src/proto/spell.pro
+++ b/src/proto/spell.pro
@@ -16,6 +16,7 @@
 void ex_spellrepall __ARGS((exarg_T *eap));
 void spell_suggest_list __ARGS((garray_T *gap, char_u *word, int maxcount, int need_cap, int interactive));
 char_u *eval_soundfold __ARGS((char_u *word));
+void ex_spellinfo __ARGS((exarg_T *eap));
 void ex_spelldump __ARGS((exarg_T *eap));
 void spell_dump_compl __ARGS((buf_T *buf, char_u *pat, int ic, int *dir, int dumpflags_arg));
 char_u *spell_to_word_end __ARGS((char_u *start, buf_T *buf));