diff --git a/src/rollup/index.ts b/src/rollup/index.ts
index ee9db367470..cc6b223a90d 100644
--- a/src/rollup/index.ts
+++ b/src/rollup/index.ts
@@ -170,7 +170,9 @@ export default function rollup(
 		curWatcher = undefined;
 
 		// remove the cache option from the memory after graph creation (cache is not used anymore)
+		const useCache = rawInputOptions.cache !== false;
 		delete inputOptions.cache;
+		delete rawInputOptions.cache;
 
 		timeStart('BUILD', 1);
 
@@ -377,7 +379,7 @@ export default function rollup(
 						});
 				}
 
-				const cache = rawInputOptions.cache === false ? undefined : graph.getCache();
+				const cache = useCache ? graph.getCache() : undefined;
 				const result: RollupSingleFileBuild | RollupBuild = {
 					cache,
 					watchFiles: Object.keys(graph.watchFiles),
diff --git a/test/leak/index.js b/test/leak/index.js
index e2e463fe860..692f2a8816e 100644
--- a/test/leak/index.js
+++ b/test/leak/index.js
@@ -18,7 +18,7 @@ function run() {
 		})
 		.then(bundle => {
 			weak(bundle, onCollect);
-			cache = bundle.cache;
+			cache = bundle;
 			global.gc();
 			if (shouldCollect && !isCollected) {
 				throw new Error('Memory leak detected');