diff --git a/src/conf/netdev_bandwidth_conf.c b/src/conf/netdev_bandwidth_conf.c
index 882433281d..50138fd29f 100644
--- a/src/conf/netdev_bandwidth_conf.c
+++ b/src/conf/netdev_bandwidth_conf.c
@@ -241,7 +241,7 @@ virNetDevBandwidthRateFormat(virNetDevBandwidthRatePtr def,
 }
 
 /**
- * virNetDevBandwidthDefFormat:
+ * virNetDevBandwidthFormat:
  * @def: Data source
  * @buf: Buffer to print to
  *
diff --git a/src/conf/netdev_bandwidth_conf.h b/src/conf/netdev_bandwidth_conf.h
index c68742798c..30f988953c 100644
--- a/src/conf/netdev_bandwidth_conf.h
+++ b/src/conf/netdev_bandwidth_conf.h
@@ -34,8 +34,7 @@ int virNetDevBandwidthParse(virNetDevBandwidthPtr *bandwidth,
                             int net_type)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
 int virNetDevBandwidthFormat(virNetDevBandwidthPtr def,
-                             virBufferPtr buf)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
+                             virBufferPtr buf);
 
 void virDomainClearNetBandwidth(virDomainObjPtr vm)
     ATTRIBUTE_NONNULL(1);