diff --git a/internal/domain/engines/ffi_shield.go b/internal/domain/engines/ffi_shield.go
index 3c9c3dd..780b5c9 100644
--- a/internal/domain/engines/ffi_shield.go
+++ b/internal/domain/engines/ffi_shield.go
@@ -23,7 +23,6 @@ import (
 	"fmt"
 	"sync"
 	"time"
-	"unsafe"
 )
 
 // NativeShield wraps the C Shield engine via CGo FFI.