diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 6f37a85d09..168eb27b03 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -45,7 +45,7 @@ from .search import SearchStore
from .tags import TagsStore
from .account_data import AccountDataStore
-from util.id_generators import IdGenerator, StreamIdGenerator, ChainedIdGenerator
+from .util.id_generators import IdGenerator, StreamIdGenerator, ChainedIdGenerator
from synapse.api.constants import PresenceState
from synapse.util.caches.stream_change_cache import StreamChangeCache
diff --git a/synapse/storage/end_to_end_keys.py b/synapse/storage/end_to_end_keys.py
index 5dd32b1413..2e89066515 100644
--- a/synapse/storage/end_to_end_keys.py
+++ b/synapse/storage/end_to_end_keys.py
@@ -13,7 +13,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from _base import SQLBaseStore
+from ._base import SQLBaseStore
class EndToEndKeyStore(SQLBaseStore):
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 60936500d8..552e7ca35b 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -12,7 +12,7 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
-from _base import SQLBaseStore, _RollbackButIsFineException
+from ._base import SQLBaseStore, _RollbackButIsFineException
from twisted.internet import defer, reactor
diff --git a/synapse/storage/keys.py b/synapse/storage/keys.py
index fd05bfe54e..a495a8a7d9 100644
--- a/synapse/storage/keys.py
+++ b/synapse/storage/keys.py
@@ -13,7 +13,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from _base import SQLBaseStore
+from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cachedInlineCallbacks
from twisted.internet import defer
diff --git a/synapse/storage/media_repository.py b/synapse/storage/media_repository.py
index 0894384780..9d3ba32478 100644
--- a/synapse/storage/media_repository.py
+++ b/synapse/storage/media_repository.py
@@ -13,7 +13,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from _base import SQLBaseStore
+from ._base import SQLBaseStore
class MediaRepositoryStore(SQLBaseStore):
diff --git a/synapse/storage/signatures.py b/synapse/storage/signatures.py
index 70c6a06cd1..b10f2a5787 100644
--- a/synapse/storage/signatures.py
+++ b/synapse/storage/signatures.py
@@ -15,7 +15,7 @@
from twisted.internet import defer
-from _base import SQLBaseStore
+from ._base import SQLBaseStore
from unpaddedbase64 import encode_base64
from synapse.crypto.event_signing import compute_event_reference_hash
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