diff --git a/src/test/regress/expected/xml.out b/src/test/regress/expected/xml.out
index 9b2d264414..b451b63847 100644
--- a/src/test/regress/expected/xml.out
+++ b/src/test/regress/expected/xml.out
@@ -263,17 +263,6 @@ SELECT xmlparse(content '');
(1 row)
-SELECT xmlparse(document '');
-ERROR: invalid XML document
-DETAIL: line 1: switching encoding : no input
-
-^
-line 1: Document is empty
-
-^
-line 1: Start tag expected, '<' not found
-
-^
SELECT xmlparse(document ' ');
ERROR: invalid XML document
DETAIL: line 1: Start tag expected, '<' not found
diff --git a/src/test/regress/expected/xml_1.out b/src/test/regress/expected/xml_1.out
index c7fa526f9c..d7027030c3 100644
--- a/src/test/regress/expected/xml_1.out
+++ b/src/test/regress/expected/xml_1.out
@@ -204,10 +204,6 @@ SELECT xmlparse(content '');
ERROR: unsupported XML feature
DETAIL: This functionality requires the server to be built with libxml support.
HINT: You need to rebuild PostgreSQL using --with-libxml.
-SELECT xmlparse(document '');
-ERROR: unsupported XML feature
-DETAIL: This functionality requires the server to be built with libxml support.
-HINT: You need to rebuild PostgreSQL using --with-libxml.
SELECT xmlparse(document ' ');
ERROR: unsupported XML feature
DETAIL: This functionality requires the server to be built with libxml support.
diff --git a/src/test/regress/expected/xml_2.out b/src/test/regress/expected/xml_2.out
index 21d3de18b8..23c4e767f0 100644
--- a/src/test/regress/expected/xml_2.out
+++ b/src/test/regress/expected/xml_2.out
@@ -251,10 +251,6 @@ SELECT xmlparse(content '');
(1 row)
-SELECT xmlparse(document '');
-ERROR: invalid XML document
-DETAIL: line 1: switching encoding : no input
-line 1: Document is empty
SELECT xmlparse(document ' ');
ERROR: invalid XML document
DETAIL: line 1: Start tag expected, '<' not found
diff --git a/src/test/regress/sql/xml.sql b/src/test/regress/sql/xml.sql
index 88764c88cd..08a0b30067 100644
--- a/src/test/regress/sql/xml.sql
+++ b/src/test/regress/sql/xml.sql
@@ -71,7 +71,6 @@ SELECT xmlparse(content '');
SELECT xmlparse(content '&idontexist;');
SELECT xmlparse(content '');
-SELECT xmlparse(document '');
SELECT xmlparse(document ' ');
SELECT xmlparse(document 'abc');
SELECT xmlparse(document 'x');