diff --git a/src/Schema/PostgreSQLSchemaManager.php b/src/Schema/PostgreSQLSchemaManager.php
index cb9a39fc9a9..c40bb3ddc69 100644
--- a/src/Schema/PostgreSQLSchemaManager.php
+++ b/src/Schema/PostgreSQLSchemaManager.php
@@ -120,6 +120,7 @@ public function listSchemaNames(): array
 FROM   information_schema.schemata
 WHERE  schema_name NOT LIKE 'pg\_%'
 AND    schema_name != 'information_schema'
+AND    schema_name != 'public'
 SQL
         );
     }
diff --git a/tests/Functional/Schema/PostgreSQLSchemaManagerTest.php b/tests/Functional/Schema/PostgreSQLSchemaManagerTest.php
index a7e75cc6b58..eaab6dfa0d4 100644
--- a/tests/Functional/Schema/PostgreSQLSchemaManagerTest.php
+++ b/tests/Functional/Schema/PostgreSQLSchemaManagerTest.php
@@ -50,11 +50,14 @@ public function testGetSearchPath(): void
 
     public function testGetSchemaNames(): void
     {
+        $createSchemaSQL = 'CREATE SCHEMA schema_retrieval_test';
+        $this->connection->executeStatement($createSchemaSQL);
+
         assert($this->schemaManager instanceof PostgreSQLSchemaManager);
 
         $names = $this->schemaManager->getSchemaNames();
 
-        self::assertContains('public', $names, 'The public schema should be found.');
+        self::assertContains('schema_retrieval_test', $names, 'The schema_retrieval_test schema should be found.');
     }
 
     public function testSupportDomainTypeFallback(): void