1 files changed, 1 insertions, 2 deletions
diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index c627ca2..652c2ce 100644
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -346,8 +346,7 @@ _io_open_impl(PyObject *module, PyObject *file, const char *mode,
         goto error;
     }
 
-    if (binary && encoding != NULL
-            && strcmp(encoding, "locale") != 0) {
+    if (binary && encoding != NULL) {
         PyErr_SetString(PyExc_ValueError,
                         "binary mode doesn't take an encoding argument");
         goto error;