diff --git a/lib/wind/version-script.map b/lib/wind/version-script.map
index a6ca3ae54..6b5abb5ee 100644
--- a/lib/wind/version-script.map
+++ b/lib/wind/version-script.map
@@ -14,6 +14,7 @@ HEIMDAL_WIND_1.0 {
 		wind_utf8ucs2_length;
 		wind_ucs2utf8_length;
 		wind_ucs2read;
+		wind_ucs2write;
 		# testing
 		_wind_combining_class;
 		_wind_stringprep_testbidi;