diff --git a/internal/uidriver/glfw/ui.go b/internal/uidriver/glfw/ui.go
index d27667dfc..e0b9941cd 100644
--- a/internal/uidriver/glfw/ui.go
+++ b/internal/uidriver/glfw/ui.go
@@ -1064,7 +1064,7 @@ func (u *UserInterface) loop() error {
 		// Create icon images in a different goroutine (#1478).
 		// In the fullscreen mode, SetIcon fails (#1578).
 		if imgs := u.getIconImages(); len(imgs) > 0 && !u.isFullscreen() {
-			u.setIconImages(imgs[:0])
+			u.setIconImages(nil)
 
 			// Convert the icons in the different goroutine, as (*ebiten.Image).At cannot be invoked
 			// from this goroutine. At works only in between BeginFrame and EndFrame.