diff --git a/tools/isobuild/compiler-plugin.js b/tools/isobuild/compiler-plugin.js
index 039b00d509..c5e30d318c 100644
--- a/tools/isobuild/compiler-plugin.js
+++ b/tools/isobuild/compiler-plugin.js
@@ -629,7 +629,7 @@ class PackageSourceBatch {
       });
     }
 
-    if (cacheFilename) {
+    if (false && cacheFilename) {
       let diskCached = null;
       try {
         diskCached = files.readJSONOrNull(cacheFilename);