diff --git a/CHANGELOG.md b/CHANGELOG.md
index af24c5f1d..4ce190bee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
 # Changelog and release notes
 
-<!-- ## Unreleased -->
+## Unreleased
 <!-- here goes all the unreleased changes descriptions -->
+### Fixes
+- fix leaking resolver source code in `MissingSubscriptionTopicsError` error message (#489)
 
 ## v0.17.5
 ### Features
diff --git a/src/errors/MissingSubscriptionTopicsError.ts b/src/errors/MissingSubscriptionTopicsError.ts
index 0d2f772da..a51b17810 100644
--- a/src/errors/MissingSubscriptionTopicsError.ts
+++ b/src/errors/MissingSubscriptionTopicsError.ts
@@ -1,6 +1,6 @@
 export class MissingSubscriptionTopicsError extends Error {
   constructor(target: Function, methodName: string) {
-    super(`${target}#${methodName} subscription has no provided topics!`);
+    super(`${target.name}#${methodName} subscription has no provided topics!`);
 
     Object.setPrototypeOf(this, new.target.prototype);
   }
diff --git a/tests/functional/subscriptions.ts b/tests/functional/subscriptions.ts
index 3016cbf99..4ff46d9b8 100644
--- a/tests/functional/subscriptions.ts
+++ b/tests/functional/subscriptions.ts
@@ -535,7 +535,7 @@ describe("Subscriptions", () => {
 
     it("should throw error while passing empty topics array to Subscription", async () => {
       getMetadataStorage().clear();
-      expect.assertions(4);
+      expect.assertions(5);
       try {
         @ObjectType()
         class SampleObject {
@@ -569,6 +569,7 @@ describe("Subscriptions", () => {
         expect(err).toBeInstanceOf(MissingSubscriptionTopicsError);
         expect(err.message).toContain("SampleResolver");
         expect(err.message).toContain("sampleSubscription");
+        expect(err.message).not.toContain("class SampleResolver");
       }
     });