diff --git a/winsup/cygwin/cygwin.din b/winsup/cygwin/cygwin.din
index 346291af9..00a9faaad 100644
--- a/winsup/cygwin/cygwin.din
+++ b/winsup/cygwin/cygwin.din
@@ -423,6 +423,7 @@ _fcvtbuf = fcvtbuf SIGFE
 fcvtf SIGFE
 _fcvtf = fcvtf SIGFE
 fdatasync SIGFE
+fdopendir SIGFE
 fdim NOSIGFE
 fdimf NOSIGFE
 fdopen SIGFE