diff --git a/src/proto/quickfix.pro b/src/proto/quickfix.pro
index dbdca5f..4f61d59 100644
--- a/src/proto/quickfix.pro
+++ b/src/proto/quickfix.pro
@@ -19,6 +19,7 @@
 void ex_cnext __ARGS((exarg_T *eap));
 void ex_cfile __ARGS((exarg_T *eap));
 void ex_vimgrep __ARGS((exarg_T *eap));
+char_u *skip_vimgrep_pat __ARGS((char_u *p, char_u **s));
 void ex_cbuffer __ARGS((exarg_T *eap));
 void ex_helpgrep __ARGS((exarg_T *eap));
 /* vim: set ft=c : */