diff --git a/storage/src/main/java/tech/pegasys/teku/storage/server/rocksdb/RocksDbInstance.java b/storage/src/main/java/tech/pegasys/teku/storage/server/rocksdb/RocksDbInstance.java
index 8ed14e3ab5d..3a7c72797ab 100644
--- a/storage/src/main/java/tech/pegasys/teku/storage/server/rocksdb/RocksDbInstance.java
+++ b/storage/src/main/java/tech/pegasys/teku/storage/server/rocksdb/RocksDbInstance.java
@@ -160,6 +160,7 @@ public Stream<ColumnEntry<Bytes, Bytes>> streamRaw(final KvStoreColumn<?, ?> col
   @Override
   @MustBeClosed
   public Stream<Bytes> streamKeysRaw(final KvStoreColumn<?, ?> column) {
+    assertOpen();
     return createStreamKeyRaw(column, RocksIterator::seekToFirst, key -> true).map(Bytes::wrap);
   }