diff --git a/biome.jsonc b/biome.jsonc
index 62e2d3bbed4..4b5a0153b23 100644
--- a/biome.jsonc
+++ b/biome.jsonc
@@ -91,6 +91,19 @@
         "noUselessSwitchCase": "off", // Explicit > Implicit
         "noUselessConstructor": "warn", // TODO: Refactor and make this an error
         "noBannedTypes": "warn" // TODO: Refactor and make this an error
+      },
+      "nursery": {
+        "noRestrictedTypes": {
+          "level": "error",
+          "options": {
+            "types": {
+              "integer": {
+                "message": "This is an alias for 'number' that can provide false impressions of what values can actually be contained in this variable. Use 'number' instead.",
+                "use": "number"
+              }
+            }
+          }
+        }
       }
     }
   },
diff --git a/src/phases/revival-blessing-phase.ts b/src/phases/revival-blessing-phase.ts
index 598d9109abc..428acaf9ed4 100644
--- a/src/phases/revival-blessing-phase.ts
+++ b/src/phases/revival-blessing-phase.ts
@@ -24,7 +24,7 @@ export class RevivalBlessingPhase extends BattlePhase {
       UiMode.PARTY,
       PartyUiMode.REVIVAL_BLESSING,
       this.user.getFieldIndex(),
-      (slotIndex: integer, _option: PartyOption) => {
+      (slotIndex: number, _option: PartyOption) => {
         if (slotIndex >= 0 && slotIndex < 6) {
           const pokemon = globalScene.getPlayerParty()[slotIndex];
           if (!pokemon || !pokemon.isFainted()) {