diff --git a/shiny/driver/internal/win32/key.go b/shiny/driver/internal/win32/key.go
index c7b9e38..cb8f6e5 100644
--- a/shiny/driver/internal/win32/key.go
+++ b/shiny/driver/internal/win32/key.go
@@ -332,14 +332,14 @@
 		Modifiers: keyModifiers(),
 	}
 	switch uMsg {
-	case _WM_KEYDOWN:
+	case _WM_KEYDOWN, _WM_SYSKEYDOWN:
 		const prevMask = 1 << 30
 		if repeat := lParam&prevMask == prevMask; repeat {
 			e.Direction = key.DirNone
 		} else {
 			e.Direction = key.DirPress
 		}
-	case _WM_KEYUP:
+	case _WM_KEYUP, _WM_SYSKEYUP:
 		e.Direction = key.DirRelease
 	default:
 		panic(fmt.Sprintf("win32: unexpected key message: %d", uMsg))
diff --git a/shiny/driver/internal/win32/win32.go b/shiny/driver/internal/win32/win32.go
index 6925085..4fe6696 100644
--- a/shiny/driver/internal/win32/win32.go
+++ b/shiny/driver/internal/win32/win32.go
@@ -333,7 +333,8 @@
 
 	_WM_KEYDOWN: sendKeyEvent,
 	_WM_KEYUP:   sendKeyEvent,
-	// TODO case _WM_SYSKEYDOWN, _WM_SYSKEYUP:
+	_WM_SYSKEYDOWN: sendKeyEvent,
+	_WM_SYSKEYUP: sendKeyEvent,
 }
 
 func AddWindowMsg(fn func(hwnd syscall.Handle, uMsg uint32, wParam, lParam uintptr)) uint32 {