diff --git a/intl/icu_sources_data.py b/intl/icu_sources_data.py
index 909bfd3aeca2..5dcc69526fec 100644
--- a/intl/icu_sources_data.py
+++ b/intl/icu_sources_data.py
@@ -241,7 +241,7 @@ def update_data_file(topsrcdir):
                 + "-DUCONFIG_NO_TRANSLITERATION "
                 + "-DUCONFIG_NO_REGULAR_EXPRESSIONS "
                 + "-DUCONFIG_NO_BREAK_ITERATION "
-                + "-DUCONFIG_NO_BREAK_IDNA "
+                + "-DUCONFIG_NO_IDNA "
                 + "-DUCONFIG_NO_MF2 "
                 + "-DU_CHARSET_IS_UTF8 "
             )