diff --git a/test/fixtures/stacktrace.ts b/test/fixtures/stacktrace.ts
index 7314a6568..9a155e864 100644
--- a/test/fixtures/stacktrace.ts
+++ b/test/fixtures/stacktrace.ts
@@ -1,4 +1,8 @@
 enum Foo {
 	A = "Hello, TypeScript!",
 }
-throw new Error(Foo.A);
+
+// Allow warnings about source maps to be shown for testing purposes.
+setImmediate(() => {
+  throw new Error(Foo.A);
+});
diff --git a/test/loader.test.js b/test/loader.test.js
index d3ed4a3c4..3d00a86db 100644
--- a/test/loader.test.js
+++ b/test/loader.test.js
@@ -47,7 +47,7 @@ test("should warn and inaccurate stracktrace", async () => {
 
 	strictEqual(result.stdout, "");
 	match(result.stderr, /Source maps are disabled/);
-	match(result.stderr, /stacktrace.ts:5:7/); // inaccurate
+	match(result.stderr, /stacktrace.ts:7:11/); // inaccurate
 	strictEqual(result.code, 1);
 });
 
@@ -60,7 +60,7 @@ test("should not warn and accurate stracktrace", async () => {
 
 	doesNotMatch(result.stderr, /Source maps are disabled/);
 	strictEqual(result.stdout, "");
-	match(result.stderr, /stacktrace.ts:4:7/); // accurate
+	match(result.stderr, /stacktrace.ts:7:9/); // accurate
 	strictEqual(result.code, 1);
 });