-char *months_english[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
-char *months_german[] = {"Jan","Feb","Maer","Apr","Mai","Jun","Jul","Aug","Sep","Okt","Nov","Dez"};
+const char *months_english[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
+const char *months_german[] = {"Jan","Feb","Maer","Apr","Mai","Jun","Jul","Aug","Sep","Okt","Nov","Dez"};