diff --git a/app/os.go b/app/os.go
index 36a01034e..e1ded757e 100644
--- a/app/os.go
+++ b/app/os.go
@@ -176,7 +176,7 @@ type context interface {
 // basicDriver is the subset of [driver] that may be called even after
 // a window is destroyed.
 type basicDriver interface {
-	// Event blocks until an even is available and returns it.
+	// Event blocks until an event is available and returns it.
 	Event() event.Event
 	// Invalidate requests a FrameEvent.
 	Invalidate()
diff --git a/app/window.go b/app/window.go
index 58ccfdd53..70f6a3595 100644
--- a/app/window.go
+++ b/app/window.go
@@ -93,7 +93,7 @@ type Window struct {
 	// coalesced tracks the most recent events waiting to be delivered
 	// to the client.
 	coalesced eventSummary
-	// frame tracks the most recently frame event.
+	// frame tracks the most recent frame event.
 	lastFrame struct {
 		sync bool
 		size image.Point