diff --git a/interface/wx/datetime.h b/interface/wx/datetime.h
index 48b941b7b2..53595c78be 100644
--- a/interface/wx/datetime.h
+++ b/interface/wx/datetime.h
@@ -1161,11 +1161,15 @@ public:
         @a n may be either positive (counting from the beginning of the month)
         or negative (counting from the end of it).
 
-        For example, SetToWeekDay(2, wxDateTime::Wed) will set the date to the
+        For example, SetToWeekDay(wxDateTime::Wed, 2) will set the date to the
         second Wednesday in the current month and
-        SetToWeekDay(-1, wxDateTime::Sun) will set the date to the last Sunday
+        SetToWeekDay(wxDateTime::Sun, -1) will set the date to the last Sunday
         in the current month.
 
+        Note that leaving the month or year parameters as their default values
+        will result in the current month or year being substituted, overwriting
+        any previous values in the wxDateTime object.
+
         @return @true if the date was modified successfully, @false otherwise
                  meaning that the specified date doesn't exist.
     */