diff --git a/doc/source/devref/filter_scheduler.rst b/doc/source/devref/filter_scheduler.rst
index c1508b023aeb..931a27ca2d1d 100644
--- a/doc/source/devref/filter_scheduler.rst
+++ b/doc/source/devref/filter_scheduler.rst
@@ -355,7 +355,7 @@ The Filter Scheduler weighs hosts based on the config option
 `scheduler_weight_classes`, this defaults to
 `nova.scheduler.weights.all_weighers`, which selects the following weighers:
 
-* |RamWeigher| Hosts are then weighted and sorted with the largest weight winning.
+* |RAMWeigher| Hosts are then weighted and sorted with the largest weight winning.
   If the multiplier is negative, the host with less RAM available will win (useful
   for stacking hosts, instead of spreading).
 * |MetricsWeigher| This weigher can compute the weight based on the compute node
@@ -393,7 +393,7 @@ in :mod:``nova.tests.scheduler``.
 .. |DiskFilter| replace:: :class:`DiskFilter <nova.scheduler.filters.disk_filter.DiskFilter>`
 .. |AggregateDiskFilter| replace:: :class:`AggregateDiskFilter <nova.scheduler.filters.disk_filter.AggregateDiskFilter>`
 .. |NumInstancesFilter| replace:: :class:`NumInstancesFilter <nova.scheduler.filters.num_instances_filter.NumInstancesFilter>`
-.. |AggregateNumInstancesFilter| replace:: :class:`AggregateNumInstancesFilter <nova.scheduler.filters.numinstances_filter.AggregateNumInstancesFilter>`
+.. |AggregateNumInstancesFilter| replace:: :class:`AggregateNumInstancesFilter <nova.scheduler.filters.num_instances_filter.AggregateNumInstancesFilter>`
 .. |IoOpsFilter| replace:: :class:`IoOpsFilter <nova.scheduler.filters.io_ops_filter.IoOpsFilter>`
 .. |AggregateIoOpsFilter| replace:: :class:`AggregateIoOpsFilter <nova.scheduler.filters.io_ops_filter.AggregateIoOpsFilter>`
 .. |PciPassthroughFilter| replace:: :class:`PciPassthroughFilter <nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter>`
@@ -411,7 +411,7 @@ in :mod:``nova.tests.scheduler``.
 .. |AggregateInstanceExtraSpecsFilter| replace:: :class:`AggregateInstanceExtraSpecsFilter <nova.scheduler.filters.aggregate_instance_extra_specs.AggregateInstanceExtraSpecsFilter>`
 .. |AggregateMultiTenancyIsolation| replace:: :class:`AggregateMultiTenancyIsolation <nova.scheduler.filters.aggregate_multitenancy_isolation.AggregateMultiTenancyIsolation>`
 .. |NUMATopologyFilter| replace:: :class:`NUMATopologyFilter <nova.scheduler.filters.numa_topology_filter.NUMATopologyFilter>`
-.. |RamWeigher| replace:: :class:`RamWeigher <nova.scheduler.weights.all_weighers.RamWeigher>`
+.. |RAMWeigher| replace:: :class:`RAMWeigher <nova.scheduler.weights.ram.RAMWeigher>`
 .. |AggregateImagePropertiesIsolation| replace:: :class:`AggregateImagePropertiesIsolation <nova.scheduler.filters.aggregate_image_properties_isolation.AggregateImagePropertiesIsolation>`
 .. |MetricsFilter| replace:: :class:`MetricsFilter <nova.scheduler.filters.metrics_filter.MetricsFilter>`
 .. |MetricsWeigher| replace:: :class:`MetricsWeigher <nova.scheduler.weights.metrics.MetricsWeigher>`