diff --git a/package.json b/package.json
index b6ab0bb..907f6a1 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "packageManager": "pnpm@8.10.2",
   "scripts": {
     "prepare": "pnpm build",
-    "lint": "eslint .",
+    "lint": "eslint --max-warnings=0 .",
     "build": "tsc -p tsconfig.lib.json",
     "dev": "cd test/fixtures && tsx",
     "test": "vitest run"
diff --git a/src/zod-procedure.ts b/src/zod-procedure.ts
index 1d749f3..8449c42 100644
--- a/src/zod-procedure.ts
+++ b/src/zod-procedure.ts
@@ -1,13 +1,9 @@
-import {Procedure} from '@trpc/server'
 import {z} from 'zod'
 import zodToJsonSchema from 'zod-to-json-schema'
 import type {Result, ParsedProcedure} from './types'
 
 function getInnerType(zodType: z.ZodType): z.ZodType {
-  if (zodType instanceof z.ZodOptional) {
-    return getInnerType(zodType._def.innerType as z.ZodType)
-  }
-  if (zodType instanceof z.ZodNullable) {
+  if (zodType instanceof z.ZodOptional || zodType instanceof z.ZodNullable) {
     return getInnerType(zodType._def.innerType as z.ZodType)
   }
   if (zodType instanceof z.ZodEffects) {