From d1f0a169500a03f03245708e017d03a3a6cb48a5 Mon Sep 17 00:00:00 2001
From: pwygab <poonsters6@gmail.com>
Date: Fri, 2 Sep 2022 12:18:44 +0000
Subject: [PATCH] improve panic messages for add_system_to_stage and
 add_system_set_to_stage (#5847)

# Objective

- Make the panic messages more specific and understandable.
- Fixes #5811
## Solution

- Edit the panic message.

---
---
 crates/bevy_app/src/app.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_app/src/app.rs b/crates/bevy_app/src/app.rs
index 7d6c027da0cdf..55722cd9e9a0c 100644
--- a/crates/bevy_app/src/app.rs
+++ b/crates/bevy_app/src/app.rs
@@ -382,7 +382,7 @@ impl App {
         use std::any::TypeId;
         assert!(
             stage_label.type_id() != TypeId::of::<StartupStage>(),
-            "add systems to a startup stage using App::add_startup_system_to_stage"
+            "use `add_startup_system_to_stage` instead of `add_system_to_stage` to add a system to a StartupStage"
         );
         self.schedule.add_system_to_stage(stage_label, system);
         self
@@ -417,7 +417,7 @@ impl App {
         use std::any::TypeId;
         assert!(
             stage_label.type_id() != TypeId::of::<StartupStage>(),
-            "add system sets to a startup stage using App::add_startup_system_set_to_stage"
+            "use `add_startup_system_set_to_stage` instead of `add_system_set_to_stage` to add system sets to a StartupStage"
         );
         self.schedule
             .add_system_set_to_stage(stage_label, system_set);