diff --git a/tools/extern.h b/tools/extern.h
index 062d51c..9a5f6ea 100644
--- a/tools/extern.h
+++ b/tools/extern.h
@@ -78,6 +78,7 @@ int credman_print_rk(fido_dev_t *, const char *, const char *, const char *);
 int get_devopt(fido_dev_t *, const char *, int *);
 int pin_change(char *);
 int pin_set(char *);
+int pin_set2(char* path, const char* pin1);
 int should_retry_with_pin(const fido_dev_t *, int);
 int string_read(FILE *, char **);
 int token_config(int, char **, char *);