diff --git a/src/Persistence/Sql/Postgresql/Query.php b/src/Persistence/Sql/Postgresql/Query.php
index 5be49dfe2..5146559c3 100644
--- a/src/Persistence/Sql/Postgresql/Query.php
+++ b/src/Persistence/Sql/Postgresql/Query.php
@@ -58,7 +58,7 @@ function ($sqlLeft, $sqlRight) use ($makeSqlFx) {
                     // replace backslash in "\xddd" for LIKE/REGEXP
                     $res = 'regexp_replace(' . $res . ', '
                         . $this->escapeStringLiteral('(?<!\\\)((\\\\\\\)*)\\\(\d\d\d)') . ', '
-                        . $this->escapeStringLiteral('\1~~bytea~\3~~') . ', '
+                        . $this->escapeStringLiteral("\\1\u{00a9}\\3\u{00a9}") . ', '
                         . $this->escapeStringLiteral('g') . ')';
 
                     // revert double backslashes
diff --git a/tests/ConditionSqlTest.php b/tests/ConditionSqlTest.php
index e611e0fb3..84319626b 100644
--- a/tests/ConditionSqlTest.php
+++ b/tests/ConditionSqlTest.php
@@ -707,11 +707,6 @@ public function testRegexpCondition(string $type, bool $isBinary): void
 
         self::assertSame([1], $findIdsRegexFx('name', 'John'));
         self::assertSame($isBinary ? [] : [1], $findIdsRegexFx('name', 'john'));
-
-        if ($this->getDatabasePlatform() instanceof PostgreSQLPlatform && $isBinary) {
-            return; // TODO
-        }
-
         self::assertSame($isBinaryMysql8x ? [] : [13], $findIdsRegexFx('name', 'heiß'));
         self::assertSame($isBinary ? [] : [13], $findIdsRegexFx('name', 'Heiß'));
         self::assertSame([1], $findIdsRegexFx('name', 'Joh'));
diff --git a/tests/Persistence/Sql/QueryTest.php b/tests/Persistence/Sql/QueryTest.php
index 43ade0492..e2e60fbfe 100644
--- a/tests/Persistence/Sql/QueryTest.php
+++ b/tests/Persistence/Sql/QueryTest.php
@@ -881,7 +881,7 @@ public function testWhereSpecialValues(): void
         }
         self::assertSame(
             <<<'EOF'
-                where case when pg_typeof("name") = 'bytea'::regtype then replace(regexp_replace(encode(case when pg_typeof("name") = 'bytea'::regtype then decode(case when pg_typeof("name") = 'bytea'::regtype then replace(substring(cast("name" as text) from 3), chr(92), repeat(chr(92), 2)) else '' end, 'hex') else cast(replace(cast("name" as text), chr(92), repeat(chr(92), 2)) as bytea) end, 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1~~bytea~\3~~', 'g'), repeat(chr(92), 2), chr(92)) like regexp_replace(replace(regexp_replace(encode(cast(replace(cast(:a as text), chr(92), repeat(chr(92), 2)) as bytea), 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1~~bytea~\3~~', 'g'), repeat(chr(92), 2), chr(92)), '(\\[\\_%])|(\\)', '\1\2\2', 'g') escape chr(92) else cast("name" as citext) like regexp_replace(:a, '(\\[\\_%])|(\\)', '\1\2\2', 'g') escape chr(92) end
+                where case when pg_typeof("name") = 'bytea'::regtype then replace(regexp_replace(encode(case when pg_typeof("name") = 'bytea'::regtype then decode(case when pg_typeof("name") = 'bytea'::regtype then replace(substring(cast("name" as text) from 3), chr(92), repeat(chr(92), 2)) else '' end, 'hex') else cast(replace(cast("name" as text), chr(92), repeat(chr(92), 2)) as bytea) end, 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1©\3©', 'g'), repeat(chr(92), 2), chr(92)) like regexp_replace(replace(regexp_replace(encode(cast(replace(cast(:a as text), chr(92), repeat(chr(92), 2)) as bytea), 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1©\3©', 'g'), repeat(chr(92), 2), chr(92)), '(\\[\\_%])|(\\)', '\1\2\2', 'g') escape chr(92) else cast("name" as citext) like regexp_replace(:a, '(\\[\\_%])|(\\)', '\1\2\2', 'g') escape chr(92) end
                 EOF,
             (new PostgresqlQuery('[where]'))->where('name', 'like', 'foo')->render()[0]
         );
@@ -925,7 +925,7 @@ public function testWhereSpecialValues(): void
         }
         self::assertSame(
             <<<'EOF'
-                where case when pg_typeof("name") = 'bytea'::regtype then replace(regexp_replace(encode(case when pg_typeof("name") = 'bytea'::regtype then decode(case when pg_typeof("name") = 'bytea'::regtype then replace(substring(cast("name" as text) from 3), chr(92), repeat(chr(92), 2)) else '' end, 'hex') else cast(replace(cast("name" as text), chr(92), repeat(chr(92), 2)) as bytea) end, 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1~~bytea~\3~~', 'g'), repeat(chr(92), 2), chr(92)) ~ replace(regexp_replace(encode(cast(replace(cast(:a as text), chr(92), repeat(chr(92), 2)) as bytea), 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1~~bytea~\3~~', 'g'), repeat(chr(92), 2), chr(92)) else cast("name" as citext) ~ :a end
+                where case when pg_typeof("name") = 'bytea'::regtype then replace(regexp_replace(encode(case when pg_typeof("name") = 'bytea'::regtype then decode(case when pg_typeof("name") = 'bytea'::regtype then replace(substring(cast("name" as text) from 3), chr(92), repeat(chr(92), 2)) else '' end, 'hex') else cast(replace(cast("name" as text), chr(92), repeat(chr(92), 2)) as bytea) end, 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1©\3©', 'g'), repeat(chr(92), 2), chr(92)) ~ replace(regexp_replace(encode(cast(replace(cast(:a as text), chr(92), repeat(chr(92), 2)) as bytea), 'escape'), '(?<!\\)((\\\\)*)\\(\d\d\d)', '\1©\3©', 'g'), repeat(chr(92), 2), chr(92)) else cast("name" as citext) ~ :a end
                 EOF,
             (new PostgresqlQuery('[where]'))->where('name', 'regexp', 'foo')->render()[0]
         );