diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index 564e425..645e6e0 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -189,7 +189,7 @@
 	}
 
 	/* Populate the easy fields of our "struct lguest" */
-	lg->mem_base = (void __user *)(long)args[0];
+	lg->mem_base = (void __user *)args[0];
 	lg->pfn_limit = args[1];
 
 	/* This is the first cpu (cpu 0) and it will start booting at args[3] */