diff --git a/lib/cartodb/cache/backend/fastly.js b/lib/cartodb/cache/backend/fastly.js
index 91cf162a..d641b5d6 100644
--- a/lib/cartodb/cache/backend/fastly.js
+++ b/lib/cartodb/cache/backend/fastly.js
@@ -14,5 +14,3 @@ module.exports = FastlyCacheBackend;
 FastlyCacheBackend.prototype.invalidate = function(cacheObject, callback) {
     this.fastlyPurge.key(this.serviceId, cacheObject.key(), callback);
 };
-
-module.exports = FastlyCacheBackend;
diff --git a/lib/cartodb/cache/backend/varnish_http.js b/lib/cartodb/cache/backend/varnish_http.js
index f9af6f6a..760e1f11 100644
--- a/lib/cartodb/cache/backend/varnish_http.js
+++ b/lib/cartodb/cache/backend/varnish_http.js
@@ -28,5 +28,3 @@ VarnishHttpCacheBackend.prototype.invalidate = function(cacheObject, callback) {
         }
     );
 };
-
-module.exports = VarnishHttpCacheBackend;
\ No newline at end of file