diff --git a/xonsh/environ.py b/xonsh/environ.py
index bcb658375..ccc12cf31 100644
--- a/xonsh/environ.py
+++ b/xonsh/environ.py
@@ -88,7 +88,7 @@ DEFAULT_ENSURERS = {
     'XONSH_HISTORY_SIZE': (is_history_tuple, to_history_tuple, history_tuple_to_str),
     'XONSH_LOGIN': (is_bool, to_bool, bool_to_str),
     'XONSH_STORE_STDOUT': (is_bool, to_bool, bool_to_str),
-    'XONSH_STORE_STIN': (is_bool, to_bool, bool_to_str),
+    'XONSH_STORE_STDIN': (is_bool, to_bool, bool_to_str),
     'VI_MODE': (is_bool, to_bool, bool_to_str),
     'VIRTUAL_ENV': (is_string, ensure_string, ensure_string),
     'WIN_UNICODE_CONSOLE': (always_false, setup_win_unicode_console, bool_to_str),