diff --git a/test/uvw/async.cpp b/test/uvw/async.cpp
index 4d132feb..7994a15b 100644
--- a/test/uvw/async.cpp
+++ b/test/uvw/async.cpp
@@ -8,7 +8,7 @@ TEST(Async, Send) {
 
     bool checkAsyncEvent = false;
 
-    handle->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     handle->on<uvw::AsyncEvent>([&checkAsyncEvent](const auto &, auto &hndl) {
         ASSERT_FALSE(checkAsyncEvent);
@@ -32,9 +32,8 @@ TEST(Async, Fake) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::AsyncHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::AsyncEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::AsyncEvent>([](auto &&...) { FAIL(); });
 
     handle->send();
     handle->close();
diff --git a/test/uvw/check.cpp b/test/uvw/check.cpp
index 7dea9bea..e612f15f 100644
--- a/test/uvw/check.cpp
+++ b/test/uvw/check.cpp
@@ -8,7 +8,7 @@ TEST(Check, StartAndStop) {
 
     bool checkCheckEvent = false;
 
-    handle->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     handle->on<uvw::CheckEvent>([&checkCheckEvent](const auto &, auto &hndl) {
         ASSERT_FALSE(checkCheckEvent);
@@ -33,9 +33,8 @@ TEST(Check, Fake) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::CheckHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::CheckEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::CheckEvent>([](auto &&...) { FAIL(); });
 
     handle->start();
     handle->close();
diff --git a/test/uvw/idle.cpp b/test/uvw/idle.cpp
index 19626f64..d8db93a1 100644
--- a/test/uvw/idle.cpp
+++ b/test/uvw/idle.cpp
@@ -8,7 +8,7 @@ TEST(Idle, StartAndStop) {
 
     bool checkIdleEvent = false;
 
-    handle->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     handle->on<uvw::IdleEvent>([&checkIdleEvent](const auto &, auto &hndl) {
         ASSERT_FALSE(checkIdleEvent);
@@ -33,9 +33,8 @@ TEST(Idle, Fake) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::IdleHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::IdleEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::IdleEvent>([](auto &&...) { FAIL(); });
 
     handle->start();
     handle->close();
diff --git a/test/uvw/loop.cpp b/test/uvw/loop.cpp
index 49592e5c..ecb2758b 100644
--- a/test/uvw/loop.cpp
+++ b/test/uvw/loop.cpp
@@ -21,11 +21,9 @@ TEST(Loop, Functionalities) {
     auto handle = loop->resource<uvw::PrepareHandle>();
     auto req = loop->resource<uvw::WorkReq>([]{});
 
-    auto err = [](const auto &, auto &) { FAIL(); };
-
-    loop->on<uvw::ErrorEvent>(err);
-    req->on<uvw::ErrorEvent>(err);
-    handle->on<uvw::ErrorEvent>(err);
+    loop->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    req->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     ASSERT_TRUE(static_cast<bool>(handle));
     ASSERT_TRUE(static_cast<bool>(req));
diff --git a/test/uvw/prepare.cpp b/test/uvw/prepare.cpp
index 477a072e..8f622a77 100644
--- a/test/uvw/prepare.cpp
+++ b/test/uvw/prepare.cpp
@@ -8,7 +8,7 @@ TEST(Prepare, StartAndStop) {
 
     bool checkPrepareEvent = false;
 
-    handle->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     handle->on<uvw::PrepareEvent>([&checkPrepareEvent](const auto &, auto &hndl) {
         ASSERT_FALSE(checkPrepareEvent);
@@ -33,9 +33,8 @@ TEST(Prepare, Fake) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::PrepareHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::PrepareEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::PrepareEvent>([](auto &&...) { FAIL(); });
 
     handle->start();
     handle->close();
diff --git a/test/uvw/signal.cpp b/test/uvw/signal.cpp
index ada640e5..df032e78 100644
--- a/test/uvw/signal.cpp
+++ b/test/uvw/signal.cpp
@@ -6,9 +6,8 @@ TEST(Signal, Start) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::SignalHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::CheckEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::CheckEvent>([](auto &&...) { FAIL(); });
 
     handle->start(2);
 
@@ -27,9 +26,8 @@ TEST(Signal, OneShot) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::SignalHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::CheckEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::CheckEvent>([](auto &&...) { FAIL(); });
 
     handle->oneShot(2);
 
diff --git a/test/uvw/timer.cpp b/test/uvw/timer.cpp
index 1d47a0ec..f07add7a 100644
--- a/test/uvw/timer.cpp
+++ b/test/uvw/timer.cpp
@@ -10,8 +10,8 @@ TEST(Timer, StartAndStop) {
     bool checkTimerNoRepeatEvent = false;
     bool checkTimerRepeatEvent = false;
 
-    handleNoRepeat->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
-    handleRepeat->on<uvw::ErrorEvent>([](const auto &, auto &) { FAIL(); });
+    handleNoRepeat->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handleRepeat->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
 
     handleNoRepeat->on<uvw::TimerEvent>([&checkTimerNoRepeatEvent](const auto &, auto &handle) {
         ASSERT_FALSE(checkTimerNoRepeatEvent);
@@ -111,9 +111,8 @@ TEST(Timer, Fake) {
     auto loop = uvw::Loop::getDefault();
     auto handle = loop->resource<uvw::TimerHandle>();
 
-    auto l = [](const auto &, auto &) { FAIL(); };
-    handle->on<uvw::ErrorEvent>(l);
-    handle->on<uvw::TimerEvent>(l);
+    handle->on<uvw::ErrorEvent>([](auto &&...) { FAIL(); });
+    handle->on<uvw::TimerEvent>([](auto &&...) { FAIL(); });
 
     handle->start(uvw::TimerHandle::Time{0}, uvw::TimerHandle::Time{0});
     handle->close();