diff --git a/src/filters/filter.h b/src/filters/filter.h
index 9530c4a..ccb7af4 100644
--- a/src/filters/filter.h
+++ b/src/filters/filter.h
@@ -17,5 +17,6 @@ extern const char *error(cfg_t *c);
 extern bool   config(cfg_t *c, const char *key, const char *value);
 extern bool   append(cfg_t *c, const char *pattern);
 extern bool    ready(cfg_t *c);
+extern bool    stats(cfg_t *c, int *matches, char **pattern, bool reset);
 extern bool    match(cfg_t *c, const char *line, char *buf, size_t bufsize);
 extern void  destroy(cfg_t *c);