diff --git a/internal/ui/ui_cbackend.go b/internal/ui/ui_cbackend.go
index 58ac63d0d..f4cf2e29d 100644
--- a/internal/ui/ui_cbackend.go
+++ b/internal/ui/ui_cbackend.go
@@ -19,7 +19,6 @@ package ui
 
 import (
 	"runtime"
-	"time"
 
 	"github.com/hajimehoshi/ebiten/v2/internal/cbackend"
 )