diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 90742f2f4a7ccc45fb6e824d6500e57423030397..4cf56c9425c95f631f5b5d445de683a25444ee65 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -752,7 +752,7 @@ struct _virDomainControllerDef {
 };
 
 
-/* Two types of disk backends */
+/* Types of disk backends */
 typedef enum {
     VIR_DOMAIN_FS_TYPE_MOUNT, /* Mounts (binds) a host dir on a guest dir */
     VIR_DOMAIN_FS_TYPE_BLOCK, /* Mounts a host block dev on a guest dir */