diff --git a/src/battle-phases.ts b/src/battle-phases.ts
index 660e6bb8e..235a31d02 100644
--- a/src/battle-phases.ts
+++ b/src/battle-phases.ts
@@ -463,7 +463,8 @@ export class SelectBiomePhase extends BattlePhase {
     const currentBiome = this.scene.arena.biomeType;
 
     const setNextBiome = (nextBiome: Biome) => {
-      this.scene.unshiftPhase(new PartyHealPhase(this.scene, false));
+      if (!(this.scene.currentBattle.waveIndex % 10))
+        this.scene.unshiftPhase(new PartyHealPhase(this.scene, false));
       this.scene.unshiftPhase(new SwitchBiomePhase(this.scene, nextBiome));
       this.end();
     };