diff --git a/vl.c b/vl.c
index eee59dd..e070ec9 100644
--- a/vl.c
+++ b/vl.c
@@ -173,6 +173,8 @@
 
 #define DEFAULT_RAM_SIZE 128
 
+#define MAX_VIRTIO_CONSOLES 1
+
 static const char *data_dir;
 const char *bios_name = NULL;
 /* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available