diff --git a/app.go b/app.go
index c81e03d78..fa6005d21 100644
--- a/app.go
+++ b/app.go
@@ -746,7 +746,7 @@ func (app *App) Done() <-chan os.Signal {
 // Wait returns a channel of [ShutdownSignal] to block on after starting the
 // application and function, similar to [App.Done], but with a minor difference:
 // if the app was shut down via [Shutdowner.Shutdown],
-// the exit code (if provied via [ExitCode]) will be available
+// the exit code (if provided via [ExitCode]) will be available
 // in the [ShutdownSignal] struct.
 // Otherwise, the signal that was received will be set.
 func (app *App) Wait() <-chan ShutdownSignal {
diff --git a/app_test.go b/app_test.go
index bf5e49bc8..613ab4d09 100644
--- a/app_test.go
+++ b/app_test.go
@@ -615,7 +615,7 @@ func TestPrivateProvideWithDecorators(t *testing.T) {
 }
 
 func TestWithLoggerErrorUseDefault(t *testing.T) {
-	// This test cannot be run in paralllel with the others because
+	// This test cannot be run in parallel with the others because
 	// it hijacks stderr.
 
 	// Temporarily hijack stderr and restore it after this test so
diff --git a/internal/fxclock/clock_test.go b/internal/fxclock/clock_test.go
index 52e433c62..0bb22de77 100644
--- a/internal/fxclock/clock_test.go
+++ b/internal/fxclock/clock_test.go
@@ -149,7 +149,7 @@ func TestMock_Sleep(t *testing.T) {
 		// ok
 	}
 
-	// Avance to the next millisecond, the Sleep should return.
+	// Advance to the next millisecond, the Sleep should return.
 	clock.Add(1 * time.Millisecond)
 	select {
 	case <-ch:
diff --git a/internal/lifecycle/lifecycle_test.go b/internal/lifecycle/lifecycle_test.go
index 27519795b..faa885987 100644
--- a/internal/lifecycle/lifecycle_test.go
+++ b/internal/lifecycle/lifecycle_test.go
@@ -91,14 +91,14 @@ func TestLifecycleStart(t *testing.T) {
 				return nil
 			},
 		})
-		// this event's starter fails, so the stopper shouldnt run
+		// this event's starter fails, so the stopper shouldn't run
 		l.Append(Hook{
 			OnStart: func(context.Context) error {
 				starterCount++
 				return err
 			},
 			OnStop: func(context.Context) error {
-				t.Error("this stopper shouldnt run, since the starter in this event failed")
+				t.Error("this stopper shouldn't run, since the starter in this event failed")
 				return nil
 			},
 		})