diff --git a/configure.ac b/configure.ac
index e71670e0eadf..cda59370037f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11943,7 +11943,7 @@ ENABLE_LIBLANGTAG=
 SYSTEM_LIBLANGTAG=
 AC_MSG_CHECKING([whether to use liblangtag])
 if test "$enable_liblangtag" = "yes" -o \
-        \( "$enable_liblangtag" = "" -a $_os != iOS -a $_os != Emscripten \); then
+        \( "$enable_liblangtag" = "" -a $_os != Emscripten \); then
     ENABLE_LIBLANGTAG=TRUE
     AC_MSG_RESULT([yes])
     AC_MSG_CHECKING([whether to use system liblangtag])