diff --git a/tests/dibi/Postgre.like.phpt b/tests/dibi/Postgre.like.phpt
new file mode 100644
index 00000000..72e87856
--- /dev/null
+++ b/tests/dibi/Postgre.like.phpt
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @dataProvider ../databases.ini
+ */
+
+use Tester\Assert;
+
+require __DIR__ . '/bootstrap.php';
+
+if ($config['system'] !== 'pgsql') {
+	Tester\Environment::skip("Not supported system '$config[system]'.");
+}
+
+
+$tests = function($conn) {
+	Assert::false($conn->query("SELECT 'AAxBB' LIKE %~like~", 'A_B')->fetchSingle());
+	Assert::true( $conn->query("SELECT 'AA_BB' LIKE %~like~", 'A_B')->fetchSingle());
+
+	Assert::false($conn->query("SELECT 'AAxBB' LIKE %~like~", 'A%B')->fetchSingle());
+	Assert::true( $conn->query("SELECT 'AA%BB' LIKE %~like~", 'A%B')->fetchSingle());
+
+	Assert::same('AA\\BB', $conn->query("SELECT 'AA\\BB'")->fetchSingle());
+	Assert::false($conn->query("SELECT 'AAxBB' LIKE %~like~", 'A\\B')->fetchSingle());
+	Assert::true( $conn->query("SELECT 'AA\\BB' LIKE %~like~", 'A\\B')->fetchSingle());
+};
+
+$conn = new DibiConnection($config);
+$conn->query('SET escape_string_warning = off'); // do not log warnings
+
+$conn->query('SET standard_conforming_strings = on');
+$tests($conn);
+$conn->query('SET standard_conforming_strings = off');
+$tests($conn);