diff --git a/crates/benilla-app/src/capture/fixtures.rs b/crates/benilla-app/src/capture/fixtures.rs
index 380dc7aaf..2d3d993a3 100644
--- a/crates/benilla-app/src/capture/fixtures.rs
+++ b/crates/benilla-app/src/capture/fixtures.rs
@@ -108,13 +108,13 @@ pub(super) fn seed_ui_fixture(
             ResMut<'static, crate::loading_screen::LoadingScreen>,
             ResMut<'static, crate::ui_gossip::GossipState>,
             ResMut<'static, crate::ui_quest::QuestGiver>,
+            ResMut<'static, crate::ui_trainer::TrainerOpen>,
         ),
     )>,
     mut ctx: ResMut<CaptureCtx>,
     mut commands: Commands,
     progress: Res<WorldLoadProgress>,
     mut quest_log: ResMut<crate::ui_quest_log::QuestLog>,
-    mut trainer: ResMut<crate::ui_trainer::TrainerOpen>,
     icons: Option<Res<crate::entities::ItemDisplays>>,
 ) {
     let icons = icons.as_deref();
@@ -123,7 +123,8 @@ pub(super) fn seed_ui_fixture(
     let mut lua: Option<Box<dyn FnOnce(&mut UiScript) + '_>> = None;
     vm.turn(|script, parts| {
         let (mut merchant, mut loot, mut names, mut selection, mut player, store, rest) = parts;
-        let (mut actions, mut bank, mut exit, mut loading, mut gossip, mut quest) = rest;
+        let (mut actions, mut bank, mut exit, mut loading, mut gossip, mut quest, mut trainer) =
+            rest;
         let (mut items, mut index, mut home_bind) = store;
         // A glue-screen capture has no world scenario, and no glue screen opens a UI fixture.
         let Some(scenario) = ctx.scenario else {
diff --git a/crates/benilla-app/src/capture/mod.rs b/crates/benilla-app/src/capture/mod.rs
index 270c6ad7f..89dc8a777 100644
--- a/crates/benilla-app/src/capture/mod.rs
+++ b/crates/benilla-app/src/capture/mod.rs
@@ -1064,3 +1064,42 @@ fn drive_capture(
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::local_state::test_env::{EnvGuard, ENV_LOCK};
+    use bevy::prelude::*;
+
+    /// A capture run's systems initialize in the client's own world, so a parameter that overlaps
+    /// the VM turn's call host fails here and not at the first capture's schedule build.
+    #[test]
+    fn every_capture_system_initializes_in_the_client() {
+        let _l = ENV_LOCK
+            .lock()
+            .unwrap_or_else(std::sync::PoisonError::into_inner);
+        let _c = EnvGuard::set("WOW_CAPTURE", "ui-trainer");
+        let mut app = crate::game_plugins::schedule_tests::headless_client_with(|app| {
+            app.add_plugins(super::CapturePlugin);
+        });
+        let world = app.world_mut();
+        let labels: Vec<_> = world
+            .resource::<bevy::ecs::schedule::Schedules>()
+            .iter()
+            .map(|(_, s)| s.label())
+            .collect();
+        let mut seen = false;
+        for label in labels {
+            world.schedule_scope(label, |world, schedule| {
+                schedule.graph_mut().systems.initialize(world);
+                seen |=
+                    schedule.graph().systems.iter().any(|(_, system, _)| {
+                        system.name().to_string().contains("seed_ui_fixture")
+                    });
+            });
+        }
+        assert!(
+            seen,
+            "the census reads the capture seed among the client's systems"
+        );
+    }
+}