diff --git a/lib/api/api-router.js b/lib/api/api-router.js
index dd409b37..9e04d2c5 100644
--- a/lib/api/api-router.js
+++ b/lib/api/api-router.js
@@ -27,7 +27,7 @@ const LayergroupAffectedTablesCache = require('../cache/layergroup-affected-tabl
 const SurrogateKeysCache = require('../cache/surrogate_keys_cache');
 const VarnishHttpCacheBackend = require('../cache/backend/varnish-http');
 const FastlyCacheBackend = require('../cache/backend/fastly');
-const NamedMapProviderCache = require('../cache/named_map_provider_cache');
+const NamedMapProviderCache = require('../cache/named-map-provider-cache');
 const NamedMapsCacheEntry = require('../cache/model/named-maps-entry');
 const NamedMapProviderReporter = require('../stats/reporter/named-map-provider');
 
diff --git a/lib/cache/named_map_provider_cache.js b/lib/cache/named-map-provider-cache.js
similarity index 100%
rename from lib/cache/named_map_provider_cache.js
rename to lib/cache/named-map-provider-cache.js