diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 62351c4a833..4c846a019a1 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -699,16 +699,16 @@ export class BattleScene extends SceneBase {
     if (expSpriteKeys.size > 0) {
       return;
     }
-    this.cachedFetch("./exp-sprites.json")
-      .then(res => res.json())
-      .then(keys => {
-        if (Array.isArray(keys)) {
-          for (const key of keys) {
-            expSpriteKeys.add(key);
-          }
-        }
-        Promise.resolve();
-      });
+    const res = await this.cachedFetch("./exp-sprites.json");
+    const keys = await res.json();
+    if (!Array.isArray(keys)) {
+      throw new Error("EXP Sprites were not array when fetched!");
+    }
+
+    // TODO: Optimize this
+    for (const k of keys) {
+      expSpriteKeys.add(k);
+    }
   }
 
   /**