diff --git a/lib/recurrence/event/monthly.rb b/lib/recurrence/event/monthly.rb
index 63695f5..4c4f1bf 100644
--- a/lib/recurrence/event/monthly.rb
+++ b/lib/recurrence/event/monthly.rb
@@ -105,7 +105,7 @@ class Monthly < Base # :nodoc: all
       end
 
       private def shift_to(date)
-        @options[:on] = date.day
+        @options[:on] = date.day unless @options[:weekday].present?
       end
 
       private def valid_ordinal?(ordinal)
diff --git a/test/recurrence/date_shift_test.rb b/test/recurrence/date_shift_test.rb
index b77a3ec..128c5ab 100644
--- a/test/recurrence/date_shift_test.rb
+++ b/test/recurrence/date_shift_test.rb
@@ -70,4 +70,13 @@ class DateShiftTest < Minitest::Test
 
     assert_equal Date.new(2012, 2, 29), r.next
   end
+
+  test "correctly recurrs for weekdays" do
+    r = recurrence(every: :month, starts: "2011-01-31", on: "first",
+                   weekday: "monday", shift: true)
+
+    assert_equal Date.new(2011, 2, 7), r.events[0]
+    assert_equal Date.new(2011, 3, 7), r.events[1]
+    assert_equal Date.new(2011, 4, 4), r.events[2]
+  end
 end