diff --git a/packages/babel-generator/src/index.js b/packages/babel-generator/src/index.js
index c730c6689a..c212cbdf7c 100644
--- a/packages/babel-generator/src/index.js
+++ b/packages/babel-generator/src/index.js
@@ -38,7 +38,7 @@ class Generator extends Printer {
  * Normalize generator options, setting defaults.
  *
  * - Detects code indentation.
- * - If `opts.compact = "auto"` and the code is over 100KB, `compact` will be set to `true`.
+ * - If `opts.compact = "auto"` and the code is over 500KB, `compact` will be set to `true`.
  */
 
 function normalizeOptions(code, opts, tokens): Format {
@@ -78,10 +78,10 @@ function normalizeOptions(code, opts, tokens): Format {
   }
 
   if (format.compact === "auto") {
-    format.compact = code.length > 100000; // 100KB
+    format.compact = code.length > 500000; // 500KB
 
     if (format.compact) {
-      console.error("[BABEL] " + messages.get("codeGeneratorDeopt", opts.filename, "100KB"));
+      console.error("[BABEL] " + messages.get("codeGeneratorDeopt", opts.filename, "500KB"));
     }
   }