diff --git a/synapse/replication/slave/storage/receipts.py b/synapse/replication/slave/storage/receipts.py
index a2eb4a02d..f0e29e983 100644
--- a/synapse/replication/slave/storage/receipts.py
+++ b/synapse/replication/slave/storage/receipts.py
@@ -31,7 +31,7 @@ from synapse.storage.receipts import ReceiptsWorkerStore
 class SlavedReceiptsStore(ReceiptsWorkerStore, BaseSlavedStore):
 
     def __init__(self, db_conn, hs):
-        # We instansiate this first as the ReceiptsWorkerStore constructor
+        # We instantiate this first as the ReceiptsWorkerStore constructor
         # needs to be able to call get_max_receipt_stream_id
         self._receipts_id_gen = SlavedIdTracker(
             db_conn, "receipts_linearized", "stream_id"
diff --git a/synapse/storage/receipts.py b/synapse/storage/receipts.py
index b11cf7ff6..c2a6613a6 100644
--- a/synapse/storage/receipts.py
+++ b/synapse/storage/receipts.py
@@ -295,7 +295,7 @@ class ReceiptsWorkerStore(SQLBaseStore):
 
 class ReceiptsStore(ReceiptsWorkerStore):
     def __init__(self, db_conn, hs):
-        # We instansiate this first as the ReceiptsWorkerStore constructor
+        # We instantiate this first as the ReceiptsWorkerStore constructor
         # needs to be able to call get_max_receipt_stream_id
         self._receipts_id_gen = StreamIdGenerator(
             db_conn, "receipts_linearized", "stream_id"