diff --git a/lib/utils/pyexec.h b/lib/utils/pyexec.h
index 0c7567e273..d7d2a85ab7 100644
--- a/lib/utils/pyexec.h
+++ b/lib/utils/pyexec.h
@@ -48,6 +48,7 @@ int pyexec_frozen_module(const char *name);
 void pyexec_event_repl_init(void);
 int pyexec_event_repl_process_char(int c);
 extern uint8_t pyexec_repl_active;
+mp_obj_t pyb_set_repl_info(mp_obj_t o_value);
 
 MP_DECLARE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj);