diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 8738c80441adf8d01fa6dfae78f2458bfe3f4c93..10cde0e970bbc64f2d73e1438651f0e81f0e426e 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1537,13 +1537,13 @@ struct _virDomainRedirFilterDef {
     virDomainRedirFilterUSBDevDefPtr *usbdevs;
 };
 
-enum {
+typedef enum {
     VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO,
     VIR_DOMAIN_MEMBALLOON_MODEL_XEN,
     VIR_DOMAIN_MEMBALLOON_MODEL_NONE,
 
     VIR_DOMAIN_MEMBALLOON_MODEL_LAST
-};
+} virDomainMemballoonModel;
 
 struct _virDomainMemballoonDef {
     int model;