diff --git a/src/simulator/crates/mc-mcts-service/src/protocol.rs b/src/simulator/crates/mc-mcts-service/src/protocol.rs
index 5692da89..4a952763 100644
--- a/src/simulator/crates/mc-mcts-service/src/protocol.rs
+++ b/src/simulator/crates/mc-mcts-service/src/protocol.rs
@@ -137,11 +137,11 @@ pub struct AbstractPlayerStateMirror {
     /// `happiness_pool` — signed; negative under unrest.
     pub happiness_pool: i16,
     /// `force_rel[opp]` — relative military force vs each opponent slot.
-    pub force_rel: [u16; 4],
+    pub force_rel: [u16; 5],
     /// `axes` — strategic axes via `mc_ai::game_state::axes_to_flat`.
     pub axes: [u8; 8],
     /// `relations[opp]` — diplomatic relation per opponent (-1/0/+1).
-    pub relations: [i8; 4],
+    pub relations: [i8; 5],
     /// `formation_strength[T1..T4]` — mean strength per tier bucket, 0–255.
     pub formation_strength: [u8; 4],
     /// `rng_state` — per-player SplitMix64 state.
@@ -189,8 +189,10 @@ impl AbstractPlayerStateMirror {
             happiness_pool: self.happiness_pool,
             _pad0: 0,
             force_rel: self.force_rel,
+            _pad_fr: 0,
             axes: self.axes,
             relations: self.relations,
+            _pad_rel: [0; 3],
             formation_strength: self.formation_strength,
             rng_state: self.rng_state,
             turn: self.turn,