diff --git a/src/conf/virinterfaceobj.c b/src/conf/virinterfaceobj.c
index 5a5fd65e14..e08b4b9b0f 100644
--- a/src/conf/virinterfaceobj.c
+++ b/src/conf/virinterfaceobj.c
@@ -320,7 +320,7 @@ virInterfaceObjListExport(virConnectPtr conn,
 
     virObjectRWLockRead(ifaceobjs);
     if (ifaces)
-        data.ifaces = g_new0(virInterfacePtr, virHashSize(ifaceobjs->objsName));
+        data.ifaces = g_new0(virInterfacePtr, virHashSize(ifaceobjs->objsName) + 1);
 
     virHashForEach(ifaceobjs->objsName, virInterfaceObjListExportCallback, &data);
 
diff --git a/src/conf/virnetworkobj.c b/src/conf/virnetworkobj.c
index 1fcfa9cdc2..a2835ebf8e 100644
--- a/src/conf/virnetworkobj.c
+++ b/src/conf/virnetworkobj.c
@@ -1407,7 +1407,7 @@ virNetworkObjListExport(virConnectPtr conn,
 
     virObjectRWLockRead(netobjs);
     if (nets)
-        data.nets = g_new0(virNetworkPtr, virHashSize(netobjs->objs));
+        data.nets = g_new0(virNetworkPtr, virHashSize(netobjs->objs) + 1);
 
     virHashForEach(netobjs->objs, virNetworkObjListExportCallback, &data);
 
@@ -1801,7 +1801,7 @@ virNetworkObjPortListExport(virNetworkPtr net,
     if (ports) {
         *ports = NULL;
 
-        data.ports = g_new0(virNetworkPortPtr, virHashSize(obj->ports));
+        data.ports = g_new0(virNetworkPortPtr, virHashSize(obj->ports) + 1);
     }
 
     virHashForEach(obj->ports, virNetworkObjPortListExportCallback, &data);
diff --git a/src/conf/virnodedeviceobj.c b/src/conf/virnodedeviceobj.c
index 28905c67b6..9af80b8036 100644
--- a/src/conf/virnodedeviceobj.c
+++ b/src/conf/virnodedeviceobj.c
@@ -931,7 +931,7 @@ virNodeDeviceObjListExport(virConnectPtr conn,
 
     virObjectRWLockRead(devs);
     if (devices)
-        data.devices = g_new0(virNodeDevicePtr, virHashSize(devs->objs));
+        data.devices = g_new0(virNodeDevicePtr, virHashSize(devs->objs) + 1);
 
     virHashForEach(devs->objs, virNodeDeviceObjListExportCallback, &data);
     virObjectRWUnlock(devs);