diff --git a/packages/babel-core/src/config/option-manager.js b/packages/babel-core/src/config/option-manager.js
index a743265113..5440c3d3d0 100644
--- a/packages/babel-core/src/config/option-manager.js
+++ b/packages/babel-core/src/config/option-manager.js
@@ -32,7 +32,6 @@ const optionNames = new Set([
   "filenameRelative",
   "inputSourceMap",
   "env",
-  "mode",
   "retainLines",
   "highlightCode",
   "suppressDeprecationMessages",