diff --git a/nova/network/floating_ips.py b/nova/network/floating_ips.py
index 2fbaa0647d44..a17a069ec451 100644
--- a/nova/network/floating_ips.py
+++ b/nova/network/floating_ips.py
@@ -214,7 +214,8 @@ class FloatingIP(object):
         # called into from other places
         try:
             if use_quota:
-                reservations = QUOTAS.reserve(context, floating_ips=1)
+                reservations = QUOTAS.reserve(context, floating_ips=1,
+                                              project_id=project_id)
         except exception.OverQuota:
             LOG.warn(_("Quota exceeded for %s, tried to allocate "
                        "floating IP"), context.project_id)
@@ -229,11 +230,12 @@ class FloatingIP(object):
 
             # Commit the reservations
             if use_quota:
-                QUOTAS.commit(context, reservations)
+                QUOTAS.commit(context, reservations, project_id=project_id)
         except Exception:
             with excutils.save_and_reraise_exception():
                 if use_quota:
-                    QUOTAS.rollback(context, reservations)
+                    QUOTAS.rollback(context, reservations,
+                                    project_id=project_id)
 
         return floating_ip
 
@@ -263,10 +265,13 @@ class FloatingIP(object):
                        floating_ip=floating_ip['address'])
         self.notifier.info(context, 'network.floating_ip.deallocate', payload)
 
+        project_id = floating_ip['project_id']
         # Get reservations...
         try:
             if use_quota:
-                reservations = QUOTAS.reserve(context, floating_ips=-1)
+                reservations = QUOTAS.reserve(context,
+                                              project_id=project_id,
+                                              floating_ips=-1)
             else:
                 reservations = None
         except Exception:
@@ -278,7 +283,7 @@ class FloatingIP(object):
 
         # Commit the reservations
         if reservations:
-            QUOTAS.commit(context, reservations)
+            QUOTAS.commit(context, reservations, project_id=project_id)
 
     @rpc_common.client_exceptions(exception.FloatingIpNotFoundForAddress)
     def associate_floating_ip(self, context, floating_address, fixed_address,
diff --git a/nova/network/manager.py b/nova/network/manager.py
index d7c9ae4026f6..24e73b05a855 100644
--- a/nova/network/manager.py
+++ b/nova/network/manager.py
@@ -880,8 +880,16 @@ class NetworkManager(manager.Manager):
         instance_uuid = fixed_ip_ref['instance_uuid']
         vif_id = fixed_ip_ref['virtual_interface_id']
 
+        # NOTE(vish) This db query could be removed if we pass az and name
+        #            (or the whole instance object).
+        instance = self.db.instance_get_by_uuid(
+                context.elevated(read_deleted='yes'),
+                instance_uuid)
+        project_id = instance.project_id
         try:
-            reservations = self.quotas.reserve(context, fixed_ips=-1)
+            reservations = self.quotas.reserve(context,
+                                               project_id=project_id,
+                                               fixed_ips=-1)
         except Exception:
             reservations = None
             LOG.exception(_("Failed to update usages deallocating "
@@ -890,12 +898,6 @@ class NetworkManager(manager.Manager):
         self._do_trigger_security_group_members_refresh_for_instance(
             instance_uuid)
 
-        # NOTE(vish) This db query could be removed if we pass az and name
-        #            (or the whole instance object).
-        instance = self.db.instance_get_by_uuid(
-                context.elevated(read_deleted='yes'),
-                instance_uuid)
-
         if self._validate_instance_zone_for_dns_domain(context, instance):
             for n in self.instance_dns_manager.get_entries_by_address(address,
                                                      self.instance_dns_domain):
@@ -951,7 +953,7 @@ class NetworkManager(manager.Manager):
 
         # Commit the reservations
         if reservations:
-            self.quotas.commit(context, reservations)
+            self.quotas.commit(context, reservations, project_id=project_id)
 
     def lease_fixed_ip(self, context, address):
         """Called by dhcp-bridge when ip is leased."""