diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index fd0c25ad6af3ecdbd03be96d1a9ee142ec8560e2..129647375a6ccfb7f61910f0c8543ed9053f7480 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -179,7 +179,8 @@ static int copy_sc_from_user(struct pt_regs *regs,
 	if (have_fpx_regs) {
 		struct user_fxsr_struct fpx;
 
-		err = copy_from_user(&fpx, &sc.fpstate->_fxsr_env[0],
+		err = copy_from_user(&fpx,
+			&((struct _fpstate __user *)sc.fpstate)->_fxsr_env[0],
 				     sizeof(struct user_fxsr_struct));
 		if (err)
 			return 1;