diff --git a/packages/bun-error/runtime-error.ts b/packages/bun-error/runtime-error.ts
index 4a739edf3e..81041129d8 100644
--- a/packages/bun-error/runtime-error.ts
+++ b/packages/bun-error/runtime-error.ts
@@ -42,11 +42,11 @@ export default class RuntimeError {
   original: Error;
   stack: StackFrame[];
 
-  static from(error: Error) {
+  static from(error: Error): RuntimeError {
     const runtime = new RuntimeError();
     runtime.original = error;
     runtime.stack = this.parseStack(error);
-    return RuntimeError;
+    return runtime;
   }
 
   /**
diff --git a/test/js/bun/runtime-error.test.ts b/test/js/bun/runtime-error.test.ts
new file mode 100644
index 0000000000..36c01859de
--- /dev/null
+++ b/test/js/bun/runtime-error.test.ts
@@ -0,0 +1,9 @@
+import { expect, test } from "bun:test";
+import RuntimeError from "../../../packages/bun-error/runtime-error";
+
+test("RuntimeError.from returns instance", () => {
+  const err = new Error("boom");
+  const runtime = RuntimeError.from(err);
+  expect(runtime.original).toBe(err);
+  expect(Array.isArray(runtime.stack)).toBe(true);
+});