diff --git a/lib/internal/tty.js b/lib/internal/tty.js
index 1e60909f66a636..ea0bea4bfac94c 100644
--- a/lib/internal/tty.js
+++ b/lib/internal/tty.js
@@ -37,7 +37,7 @@ const COLORS_16m = 24;
 // distribution of this file, with or without modification, are permitted
 // provided the copyright notice and this notice are preserved.
 const TERM_ENVS = [
-  'Eterm',
+  'eterm',
   'cons25',
   'console',
   'cygwin',