diff --git a/src/database/engine/descriptor.rs b/src/database/engine/descriptor.rs
index 7c455ffe..4185ad8d 100644
--- a/src/database/engine/descriptor.rs
+++ b/src/database/engine/descriptor.rs
@@ -169,6 +169,7 @@ pub(crate) static RANDOM_CACHE: Descriptor = Descriptor {
 pub(crate) static RANDOM_SMALL_CACHE: Descriptor = Descriptor {
 	compaction: CompactionStyle::Fifo,
 	cache_disp: CacheDisp::Unique,
+	compression: CompressionType::None,
 	limit_size: 1024 * 1024 * 64,
 	ttl: 60 * 60 * 24 * 14,
 	file_shape: 2,
diff --git a/src/database/maps.rs b/src/database/maps.rs
index e418551f..51b7d097 100644
--- a/src/database/maps.rs
+++ b/src/database/maps.rs
@@ -1,5 +1,6 @@
 use std::{collections::BTreeMap, sync::Arc};
 
+use rocksdb::DBCompressionType as CompressionType;
 use tuwunel_core::Result;
 
 use crate::{
@@ -37,7 +38,8 @@ pub(super) static MAPS: &[Descriptor] = &[
 	Descriptor {
 		name: "authchainkey_authchain",
 		cache_disp: CacheDisp::SharedWith("shorteventid_authchain"),
-		index_size: 512,
+		compression: CompressionType::None,
+		index_size: 1024,
 		block_size: 4096,
 		key_size_hint: Some(8), // intentionally match shorteventid_authchain
 		val_size_hint: Some(256),