diff --git a/src/js/select2/diacritics.js b/src/js/select2/diacritics.js
index e9d56dbf87..23c445adfa 100644
--- a/src/js/select2/diacritics.js
+++ b/src/js/select2/diacritics.js
@@ -841,7 +841,7 @@ define([
     '\u03CD': '\u03C5',
     '\u03CB': '\u03C5',
     '\u03B0': '\u03C5',
-    '\u03C9': '\u03C9',
+    '\u03CE': '\u03C9',
     '\u03C2': '\u03C3',
     '\u2019': '\''
   };