diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 3bed0ec3cc0c16033d2146072bf6a7d0a30c6432..058c2212cf9a36d37a58cf6f2bcd111aa27de1c9 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3737,7 +3737,7 @@ qemuCheckIothreads(virDomainDefPtr def,
     }
 
     /* Right "type" of disk" */
-    if (disk->bus != VIR_DOMAIN_DISK_BUS_VIRTIO &&
+    if (disk->bus != VIR_DOMAIN_DISK_BUS_VIRTIO ||
         disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("IOThreads only available for virtio pci disk"));