diff --git a/backend/mempool-config.sample.json b/backend/mempool-config.sample.json
index 1a6a52424..d0d2f486c 100644
--- a/backend/mempool-config.sample.json
+++ b/backend/mempool-config.sample.json
@@ -6,7 +6,7 @@
     "SPAWN_CLUSTER_PROCS": 0,
     "API_URL_PREFIX": "/api/v1/",
     "POLL_RATE_MS": 2000,
-    "CACHE_DIR": "./cache/"
+    "CACHE_DIR": "./cache"
   },
   "CORE_RPC": {
     "HOST": "127.0.0.1",
diff --git a/backend/src/api/disk-cache.ts b/backend/src/api/disk-cache.ts
index 55ff02014..cbdff49f0 100644
--- a/backend/src/api/disk-cache.ts
+++ b/backend/src/api/disk-cache.ts
@@ -8,8 +8,8 @@ import config from '../config';
 import { TransactionExtended } from '../mempool.interfaces';
 
 class DiskCache {
-  private static FILE_NAME = config.MEMPOOL.CACHE_DIR + 'cache.json';
-  private static FILE_NAMES = config.MEMPOOL.CACHE_DIR + 'cache{number}.json';
+  private static FILE_NAME = config.MEMPOOL.CACHE_DIR + '/cache.json';
+  private static FILE_NAMES = config.MEMPOOL.CACHE_DIR + '/cache{number}.json';
   private static CHUNK_FILES = 25;
 
   constructor() { }
diff --git a/backend/src/config.ts b/backend/src/config.ts
index f90bb4c8a..0037da6d2 100644
--- a/backend/src/config.ts
+++ b/backend/src/config.ts
@@ -61,7 +61,7 @@ const defaults: IConfig = {
     'SPAWN_CLUSTER_PROCS': 0,
     'API_URL_PREFIX': '/api/v1/',
     'POLL_RATE_MS': 2000,
-    'CACHE_DIR': './cache/'
+    'CACHE_DIR': './cache'
   },
   'ESPLORA': {
     'REST_API_URL': 'http://127.0.0.1:3000',