diff --git a/vlib/time/custom_format_test.v b/vlib/time/custom_format_test.v
index aa8a4fd27b..79290fe084 100644
--- a/vlib/time/custom_format_test.v
+++ b/vlib/time/custom_format_test.v
@@ -5,7 +5,7 @@ fn test_custom_format() {
 	assert date.custom_format('YYYY-MM-DD HH:mm') == date.format()
 	assert date.custom_format('MMM') == date.smonth()
 
-	test_str := 'M MM MMM MMMM\nD DD DDD DDDD\nd dd ddd dddd\nYY YYYY a A\nH HH h hh k kk e\nm mm s ss Z ZZ ZZZ\nDo DDDo Q Qo QQ\nN NN w wo ww\nM/D/YYYY N-HH:mm:ss Qo?a'
+	test_str := 'M MM Mo MMM MMMM\nD DD DDD DDDD\nd dd ddd dddd\nYY YYYY a A\nH HH h hh k kk e\nm mm s ss Z ZZ ZZZ\nDo DDDo Q Qo QQ\nN NN w wo ww\nM/D/YYYY N-HH:mm:ss Qo?a'
 
 	println(date.custom_format(test_str))
 }
diff --git a/vlib/time/format.v b/vlib/time/format.v
index a1bea2a665..eceb8b6246 100644
--- a/vlib/time/format.v
+++ b/vlib/time/format.v
@@ -85,8 +85,8 @@ fn ordinal_suffix(n int) string {
 }
 
 const (
-	tokens_2 = ['MM', 'DD', 'Do', 'YY', 'ss', 'kk', 'NN', 'mm', 'hh', 'HH', 'ZZ', 'dd', 'Qo', 'QQ',
-		'wo', 'ww']
+	tokens_2 = ['MM', 'Mo', 'DD', 'Do', 'YY', 'ss', 'kk', 'NN', 'mm', 'hh', 'HH', 'ZZ', 'dd', 'Qo',
+		'QQ', 'wo', 'ww']
 	tokens_3 = ['MMM', 'DDD', 'ZZZ', 'ddd']
 	tokens_4 = ['MMMM', 'DDDD', 'DDDo', 'dddd', 'YYYY']
 )