diff --git a/src/lib/validateTokenList.ts b/src/lib/validateTokenList.ts
index e7838473..6938c042 100644
--- a/src/lib/validateTokenList.ts
+++ b/src/lib/validateTokenList.ts
@@ -7,15 +7,24 @@ import { ArbTokenList } from './types';
 export const tokenListIsValid = (tokenList: ArbTokenList | TokenList) => {
   const ajv = new Ajv();
   addFormats(ajv);
-  delete schema.properties.tokens;
-  const validate = ajv.compile(schema);
+  const { tokens, ...properties } = schema.properties;
+  const schemaWithoutTokensProperty = {
+    ...schema,
+    properties,
+  };
+  const validate = ajv.compile(schemaWithoutTokensProperty);
 
   const res = validate(tokenList);
 
   if (validate.errors) {
-    const output = betterAjvErrors(schema, tokenList, validate.errors, {
-      indent: 2,
-    });
+    const output = betterAjvErrors(
+      schemaWithoutTokensProperty,
+      tokenList,
+      validate.errors,
+      {
+        indent: 2,
+      },
+    );
     console.log(output);
   }