diff --git a/tkcalendar/calendar_.py b/tkcalendar/calendar_.py
index b3cecab..61524ad 100644
--- a/tkcalendar/calendar_.py
+++ b/tkcalendar/calendar_.py
@@ -1094,7 +1094,7 @@ def _btns_date_range(self):
                     self._r_year.state(['disabled'])
                 else:
                     self._r_year.state(['!disabled'])
-                    self._r_month.state(['!disabled'])
+                self._r_month.state(['!disabled'])
             else:  # dy > 1
                 self._r_year.state(['!disabled'])
                 self._r_month.state(['!disabled'])
@@ -1115,9 +1115,9 @@ def _btns_date_range(self):
             elif dy == 1:
                 if self._date.month >= min_month:
                     self._l_year.state(['!disabled'])
-                    self._l_month.state(['!disabled'])
                 else:
                     self._l_year.state(['disabled'])
+                self._l_month.state(['!disabled'])
             else:  # dy > 1
                 self._l_year.state(['!disabled'])
                 self._l_month.state(['!disabled'])