diff --git a/src/simulator/crates/mc-sim/src/lib.rs b/src/simulator/crates/mc-sim/src/lib.rs
index cb7f6399..263f9ad7 100644
--- a/src/simulator/crates/mc-sim/src/lib.rs
+++ b/src/simulator/crates/mc-sim/src/lib.rs
@@ -186,6 +186,7 @@ impl GameRunner {
             palace_registry: Default::default(),
             lair_combat_config: Default::default(),
             victory_config: None,
+            encounter_rates: None,
         };
 
         for _ in 0..turns {
diff --git a/src/simulator/crates/mc-turn/src/processor.rs b/src/simulator/crates/mc-turn/src/processor.rs
index 1b0f319f..9795c90a 100644
--- a/src/simulator/crates/mc-turn/src/processor.rs
+++ b/src/simulator/crates/mc-turn/src/processor.rs
@@ -1557,7 +1557,7 @@ impl TurnProcessor {
                             ecology_tier: tile.ecosystem_tier.max(0) as u8,
                             fauna_index: &tile.fauna_index,
                         };
-                        if let Some(spec) = mc_ecology::encounter::roll_ambient_encounter(
+                        if let Some(spec) = mc_core::encounter::roll_ambient_encounter(
                             &ctx,
                             &unit.unit_id,
                             rates,
diff --git a/src/simulator/crates/mc-turn/tests/event_collector_wiring.rs b/src/simulator/crates/mc-turn/tests/event_collector_wiring.rs
index 30ae6587..f2c80858 100644
--- a/src/simulator/crates/mc-turn/tests/event_collector_wiring.rs
+++ b/src/simulator/crates/mc-turn/tests/event_collector_wiring.rs
@@ -213,6 +213,7 @@ fn ten_turn_run_emits_each_wired_variant() {
             TurnEvent::EraEntered { .. } => "EraEntered",
             TurnEvent::LeaderChanged { .. } => "LeaderChanged",
             TurnEvent::ClanEliminated { .. } => "ClanEliminated",
+            TurnEvent::AmbientEncounterFired { .. } => "AmbientEncounterFired",
         })
         .collect();