diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c
index 5b075c38998e..686113be0530 100644
--- a/arch/s390/kvm/pci.c
+++ b/arch/s390/kvm/pci.c
@@ -328,6 +328,7 @@ static int kvm_s390_pci_aif_enable(struct zpci_dev *zdev, struct zpci_fib *fib,
 unpin1:
 	unpin_user_page(aibv_page);
 out:
+	kvm_s390_gisc_unregister(kvm, fib->fmt0.isc);
 	return rc;
 }