1 files changed, 2 insertions, 2 deletions
diff --git a/tests/026_workers.ts b/tests/026_workers.ts
index a7deee217..e001f03e6 100644
--- a/tests/026_workers.ts
+++ b/tests/026_workers.ts
@@ -1,11 +1,11 @@
 const jsWorker = new Worker("./tests/subdir/test_worker.js");
 const tsWorker = new Worker("./tests/subdir/test_worker.ts");
 
-tsWorker.onmessage = e => {
+tsWorker.onmessage = (e): void => {
   console.log("Received ts: " + e.data);
 };
 
-jsWorker.onmessage = e => {
+jsWorker.onmessage = (e): void => {
   console.log("Received js: " + e.data);
 
   tsWorker.postMessage("Hello World");