diff --git a/packages/core/aqua-to-js/src/generate/service.ts b/packages/core/aqua-to-js/src/generate/service.ts
index 13cb89ab..7ff57f50 100644
--- a/packages/core/aqua-to-js/src/generate/service.ts
+++ b/packages/core/aqua-to-js/src/generate/service.ts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { JSONValue, ServiceDef } from "@fluencelabs/interfaces";
+import { ServiceDef } from "@fluencelabs/interfaces";
 
 import { recursiveRenameLaquaProps } from "../utils.js";
 
@@ -63,6 +63,6 @@ function generateRegisterServiceOverload(
 }
 
 function serviceToJson(service: ServiceDef): string {
-  const record: Record<never, JSONValue> = service;
+  const record: Record<never, unknown> = service;
   return JSON.stringify(recursiveRenameLaquaProps(record), null, 4);
 }
diff --git a/packages/core/aqua-to-js/src/utils.ts b/packages/core/aqua-to-js/src/utils.ts
index d56cb477..5f7434ac 100644
--- a/packages/core/aqua-to-js/src/utils.ts
+++ b/packages/core/aqua-to-js/src/utils.ts
@@ -20,7 +20,6 @@ import { join } from "path";
 import {
   ArrowType,
   ArrowWithoutCallbacks,
-  JSONValue,
   LabeledProductType,
   NilType,
   SimpleTypes,
@@ -67,7 +66,7 @@ export function getFuncArgs(
   }
 }
 
-export function recursiveRenameLaquaProps(obj: JSONValue): unknown {
+export function recursiveRenameLaquaProps(obj: unknown): unknown {
   if (typeof obj !== "object" || obj === null) {
     return obj;
   }
@@ -78,7 +77,9 @@ export function recursiveRenameLaquaProps(obj: JSONValue): unknown {
     });
   }
 
-  return Object.getOwnPropertyNames(obj).reduce((acc, prop) => {
+  const objType: {} = obj;
+
+  return Object.getOwnPropertyNames(objType).reduce((acc, prop) => {
     let accessProp = prop;
 
     if (prop.includes("Laqua_js")) {
@@ -89,12 +90,14 @@ export function recursiveRenameLaquaProps(obj: JSONValue): unknown {
         throw new Error(`Bad property name: ${prop}.`);
       }
 
-      if (refinedProperty in obj) {
+      if (refinedProperty in objType) {
         accessProp = refinedProperty;
       }
     }
 
-    const laquaProp = obj[accessProp];
+    const accessObj: Record<string, unknown> = objType;
+
+    const laquaProp = accessObj[accessProp];
 
     if (laquaProp === undefined) {
       return acc;
diff --git a/packages/core/interfaces/src/commonTypes.ts b/packages/core/interfaces/src/commonTypes.ts
deleted file mode 100644
index 245a6e13..00000000
--- a/packages/core/interfaces/src/commonTypes.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * Copyright 2023 Fluence Labs Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * Peer ID's id as a base58 string (multihash/CIDv0).
- */
-export type PeerIdB58 = string;
-
-export type JSONValue =
-  | string
-  | number
-  | boolean
-  | null
-  | { [x: string]: JSONValue }
-  | Array<JSONValue>;
-export type JSONObject = { [x: string]: JSONValue };
-export type JSONArray = Array<JSONValue>;
diff --git a/packages/core/interfaces/src/index.ts b/packages/core/interfaces/src/index.ts
index 54d8726d..f6ec28e1 100644
--- a/packages/core/interfaces/src/index.ts
+++ b/packages/core/interfaces/src/index.ts
@@ -15,5 +15,4 @@
  */
 
 export * from "./compilerSupport/aquaTypeDefinitions.js";
-export * from "./commonTypes.js";
 export * from "./future.js";