diff --git a/Lib/encodings/koi8_u.py b/Lib/encodings/koi8_u.py
index 43cd04fa0a6..59020e76142 100644
--- a/Lib/encodings/koi8_u.py
+++ b/Lib/encodings/koi8_u.py
@@ -43,7 +43,7 @@ decoding_map.update({
         0x00a6: 0x0456, #       CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
         0x00a7: 0x0457, #       CYRILLIC SMALL LETTER YI (UKRAINIAN)
         0x00ad: 0x0491, #       CYRILLIC SMALL LETTER UKRAINIAN GHE WITH UPTURN
-        0x00b4: 0x0403, #       CYRILLIC CAPITAL LETTER UKRAINIAN IE
+        0x00b4: 0x0404, #       CYRILLIC CAPITAL LETTER UKRAINIAN IE
         0x00b6: 0x0406, #       CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I
         0x00b7: 0x0407, #       CYRILLIC CAPITAL LETTER YI (UKRAINIAN)
         0x00bd: 0x0490, #       CYRILLIC CAPITAL LETTER UKRAINIAN GHE WITH UPTURN