diff --git a/sim/tools/random-player-ai.ts b/sim/tools/random-player-ai.ts
index 455f19d925..2494d3c781 100644
--- a/sim/tools/random-player-ai.ts
+++ b/sim/tools/random-player-ai.ts
@@ -99,7 +99,7 @@ export class RandomPlayerAI extends BattlePlayer {
 
 				// Filter out adjacentAlly moves if we have no allies left, unless they're our
 				// only possible move options.
-				const hasAlly = !pokemon[i ^ 1].condition.endsWith(` fnt`);
+				const hasAlly = pokemon.length > 1 && !pokemon[i ^ 1].condition.endsWith(` fnt`);
 				const filtered = canMove.filter(m => m.target !== `adjacentAlly` || hasAlly);
 				canMove = filtered.length ? filtered : canMove;