diff --git a/lib/generate/site/index.js b/lib/generate/site/index.js
index a135cdaa8..da651525c 100644
--- a/lib/generate/site/index.js
+++ b/lib/generate/site/index.js
@@ -240,8 +240,8 @@ Generator.prototype.writeCacheManifest = function() {
 Generator.prototype.finish = function() {
     var deferred = this.copyAssets().then(this.writeSearchIndex);
 
-    if (this.options.cache) {
-      deferred = deferred.then(this.writeCacheManifest);
+    if (this.options.cache !== false) {
+        deferred = deferred.then(this.writeCacheManifest);
     }
 
     return deferred;