diff --git a/sys/dev/netmap/if_ptnet.c b/sys/dev/netmap/if_ptnet.c
index ccf008d4451..a16e52f3b3b 100644
--- a/sys/dev/netmap/if_ptnet.c
+++ b/sys/dev/netmap/if_ptnet.c
@@ -87,6 +87,8 @@
 #include <dev/netmap/netmap_mem2.h>
 #include <dev/virtio/network/virtio_net.h>
 
+#ifdef WITH_PTNETMAP
+
 #ifndef INET
 #error "INET not defined, cannot support offloadings"
 #endif
@@ -1993,3 +1995,4 @@ ptnet_poll(if_t ifp, enum poll_cmd cmd, int budget)
 	return count;
 }
 #endif /* DEVICE_POLLING */
+#endif /* WITH_PTNETMAP *
diff --git a/sys/dev/netmap/netmap_kern.h b/sys/dev/netmap/netmap_kern.h
index 3748f81cbb5..690d45def35 100644
--- a/sys/dev/netmap/netmap_kern.h
+++ b/sys/dev/netmap/netmap_kern.h
@@ -76,7 +76,6 @@
 #define WITH_PIPES
 #define WITH_MONITOR
 #define WITH_GENERIC
-#define WITH_PTNETMAP	/* ptnetmap guest support */
 #define WITH_EXTMEM
 #define WITH_NMNULL
 #endif
diff --git a/sys/net/netmap_virt.h b/sys/net/netmap_virt.h
index 07e551aff00..12c2565a734 100644
--- a/sys/net/netmap_virt.h
+++ b/sys/net/netmap_virt.h
@@ -44,8 +44,8 @@
 /* PCI identifiers and PCI BARs for ptnetmap-memdev and ptnet. */
 #define PTNETMAP_MEMDEV_NAME            "ptnetmap-memdev"
 #define PTNETMAP_PCI_VENDOR_ID          0x1b36  /* QEMU virtual devices */
-#define PTNETMAP_PCI_DEVICE_ID          0x000c  /* memory device */
-#define PTNETMAP_PCI_NETIF_ID           0x000d  /* ptnet network interface */
+#define PTNETMAP_PCI_DEVICE_ID          0xcccc  /* memory device */
+#define PTNETMAP_PCI_NETIF_ID           0xcccd  /* ptnet network interface */
 #define PTNETMAP_IO_PCI_BAR             0
 #define PTNETMAP_MEM_PCI_BAR            1
 #define PTNETMAP_MSIX_PCI_BAR           2