diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5beb4c1..829e306 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2176,7 +2176,7 @@
 {
 	struct kvm *kvm = filp->private_data;
 	void __user *argp = (void __user *)arg;
-	int r = -EINVAL;
+	int r = -ENOTTY;
 	/*
 	 * This union makes it completely explicit to gcc-3.x
 	 * that these two variables' stack usage should be