diff --git a/repos/libports/lib/symbols/stdcxx b/repos/libports/lib/symbols/stdcxx
index 0d4ea1df1b..b3275c3986 100644
--- a/repos/libports/lib/symbols/stdcxx
+++ b/repos/libports/lib/symbols/stdcxx
@@ -1342,6 +1342,7 @@ _ZNSt13basic_filebufIcSt11char_traitsIcEE8overflowEi W
 _ZNSt13basic_filebufIcSt11char_traitsIcEE9pbackfailEi W
 _ZNSt13basic_filebufIcSt11char_traitsIcEE9showmanycEv W
 _ZNSt13basic_filebufIcSt11char_traitsIcEE9underflowEv W
+_ZNSt13basic_filebufIcSt11char_traitsIcEEC1EOS2_ W
 _ZNSt13basic_filebufIcSt11char_traitsIcEEC1Ev W
 _ZNSt13basic_filebufIcSt11char_traitsIcEEC2Ev W
 _ZNSt13basic_filebufIcSt11char_traitsIcEED1Ev W