diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 223ba6ade8..1eea98b410 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -3645,6 +3645,7 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
       <member><literal>'08002b:010203'</></member>
       <member><literal>'08002b-010203'</></member>
       <member><literal>'0800.2b01.0203'</></member>
+      <member><literal>'0800-2b01-0203'</></member>
       <member><literal>'08002b010203'</></member>
      </simplelist>
 
@@ -3666,7 +3667,7 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
     </para>
 
     <para>
-     The remaining four input formats are not part of any standard.
+     The remaining five input formats are not part of any standard.
     </para>
    </sect2>
 
diff --git a/src/backend/utils/adt/mac.c b/src/backend/utils/adt/mac.c
index aa9993fa5c..509315ae0e 100644
--- a/src/backend/utils/adt/mac.c
+++ b/src/backend/utils/adt/mac.c
@@ -56,6 +56,9 @@ macaddr_in(PG_FUNCTION_ARGS)
 	if (count != 6)
 		count = sscanf(str, "%2x%2x.%2x%2x.%2x%2x%1s",
 					   &a, &b, &c, &d, &e, &f, junk);
+	if (count != 6)
+		count = sscanf(str, "%2x%2x-%2x%2x-%2x%2x%1s",
+					   &a, &b, &c, &d, &e, &f, junk);
 	if (count != 6)
 		count = sscanf(str, "%2x%2x%2x%2x%2x%2x%1s",
 					   &a, &b, &c, &d, &e, &f, junk);
diff --git a/src/test/regress/expected/macaddr.out b/src/test/regress/expected/macaddr.out
index 8e41a4bbf3..e84ff5f8c0 100644
--- a/src/test/regress/expected/macaddr.out
+++ b/src/test/regress/expected/macaddr.out
@@ -7,14 +7,15 @@ INSERT INTO macaddr_data VALUES (2, '08-00-2b-01-02-03');
 INSERT INTO macaddr_data VALUES (3, '08002b:010203');
 INSERT INTO macaddr_data VALUES (4, '08002b-010203');
 INSERT INTO macaddr_data VALUES (5, '0800.2b01.0203');
-INSERT INTO macaddr_data VALUES (6, '08002b010203');
-INSERT INTO macaddr_data VALUES (7, '0800:2b01:0203'); -- invalid
+INSERT INTO macaddr_data VALUES (6, '0800-2b01-0203');
+INSERT INTO macaddr_data VALUES (7, '08002b010203');
+INSERT INTO macaddr_data VALUES (8, '0800:2b01:0203'); -- invalid
 ERROR:  invalid input syntax for type macaddr: "0800:2b01:0203"
-LINE 1: INSERT INTO macaddr_data VALUES (7, '0800:2b01:0203');
+LINE 1: INSERT INTO macaddr_data VALUES (8, '0800:2b01:0203');
                                             ^
-INSERT INTO macaddr_data VALUES (8, 'not even close'); -- invalid
+INSERT INTO macaddr_data VALUES (9, 'not even close'); -- invalid
 ERROR:  invalid input syntax for type macaddr: "not even close"
-LINE 1: INSERT INTO macaddr_data VALUES (8, 'not even close');
+LINE 1: INSERT INTO macaddr_data VALUES (9, 'not even close');
                                             ^
 INSERT INTO macaddr_data VALUES (10, '08:00:2b:01:02:04');
 INSERT INTO macaddr_data VALUES (11, '08:00:2b:01:02:02');
@@ -30,12 +31,13 @@ SELECT * FROM macaddr_data;
   4 | 08:00:2b:01:02:03
   5 | 08:00:2b:01:02:03
   6 | 08:00:2b:01:02:03
+  7 | 08:00:2b:01:02:03
  10 | 08:00:2b:01:02:04
  11 | 08:00:2b:01:02:02
  12 | 08:00:2a:01:02:03
  13 | 08:00:2c:01:02:03
  14 | 08:00:2a:01:02:04
-(11 rows)
+(12 rows)
 
 CREATE INDEX macaddr_data_btree ON macaddr_data USING btree (b);
 CREATE INDEX macaddr_data_hash ON macaddr_data USING hash (b);
@@ -52,9 +54,10 @@ SELECT a, b, trunc(b) FROM macaddr_data ORDER BY 2, 1;
   4 | 08:00:2b:01:02:03 | 08:00:2b:00:00:00
   5 | 08:00:2b:01:02:03 | 08:00:2b:00:00:00
   6 | 08:00:2b:01:02:03 | 08:00:2b:00:00:00
+  7 | 08:00:2b:01:02:03 | 08:00:2b:00:00:00
  10 | 08:00:2b:01:02:04 | 08:00:2b:00:00:00
  13 | 08:00:2c:01:02:03 | 08:00:2c:00:00:00
-(11 rows)
+(12 rows)
 
 SELECT b <  '08:00:2b:01:02:04' FROM macaddr_data WHERE a = 1; -- true
  ?column? 
@@ -113,12 +116,13 @@ SELECT ~b                       FROM macaddr_data;
  f7:ff:d4:fe:fd:fc
  f7:ff:d4:fe:fd:fc
  f7:ff:d4:fe:fd:fc
+ f7:ff:d4:fe:fd:fc
  f7:ff:d4:fe:fd:fb
  f7:ff:d4:fe:fd:fd
  f7:ff:d5:fe:fd:fc
  f7:ff:d3:fe:fd:fc
  f7:ff:d5:fe:fd:fb
-(11 rows)
+(12 rows)
 
 SELECT  b & '00:00:00:ff:ff:ff' FROM macaddr_data;
      ?column?      
@@ -129,12 +133,13 @@ SELECT  b & '00:00:00:ff:ff:ff' FROM macaddr_data;
  00:00:00:01:02:03
  00:00:00:01:02:03
  00:00:00:01:02:03
+ 00:00:00:01:02:03
  00:00:00:01:02:04
  00:00:00:01:02:02
  00:00:00:01:02:03
  00:00:00:01:02:03
  00:00:00:01:02:04
-(11 rows)
+(12 rows)
 
 SELECT  b | '01:02:03:04:05:06' FROM macaddr_data;
      ?column?      
@@ -145,11 +150,12 @@ SELECT  b | '01:02:03:04:05:06' FROM macaddr_data;
  09:02:2b:05:07:07
  09:02:2b:05:07:07
  09:02:2b:05:07:07
+ 09:02:2b:05:07:07
  09:02:2b:05:07:06
  09:02:2b:05:07:06
  09:02:2b:05:07:07
  09:02:2f:05:07:07
  09:02:2b:05:07:06
-(11 rows)
+(12 rows)
 
 DROP TABLE macaddr_data;
diff --git a/src/test/regress/sql/macaddr.sql b/src/test/regress/sql/macaddr.sql
index 1ccf501722..7bad8f5d7a 100644
--- a/src/test/regress/sql/macaddr.sql
+++ b/src/test/regress/sql/macaddr.sql
@@ -9,9 +9,10 @@ INSERT INTO macaddr_data VALUES (2, '08-00-2b-01-02-03');
 INSERT INTO macaddr_data VALUES (3, '08002b:010203');
 INSERT INTO macaddr_data VALUES (4, '08002b-010203');
 INSERT INTO macaddr_data VALUES (5, '0800.2b01.0203');
-INSERT INTO macaddr_data VALUES (6, '08002b010203');
-INSERT INTO macaddr_data VALUES (7, '0800:2b01:0203'); -- invalid
-INSERT INTO macaddr_data VALUES (8, 'not even close'); -- invalid
+INSERT INTO macaddr_data VALUES (6, '0800-2b01-0203');
+INSERT INTO macaddr_data VALUES (7, '08002b010203');
+INSERT INTO macaddr_data VALUES (8, '0800:2b01:0203'); -- invalid
+INSERT INTO macaddr_data VALUES (9, 'not even close'); -- invalid
 
 INSERT INTO macaddr_data VALUES (10, '08:00:2b:01:02:04');
 INSERT INTO macaddr_data VALUES (11, '08:00:2b:01:02:02');