diff --git a/Constraints/UniqueValidator.php b/Constraints/UniqueValidator.php
index e4e9ddbe..81533272 100644
--- a/Constraints/UniqueValidator.php
+++ b/Constraints/UniqueValidator.php
@@ -48,7 +48,7 @@ public function validate(mixed $value, Constraint $constraint): void
 
             if (\in_array($element, $collectionElements, true)) {
                 $this->context->buildViolation($constraint->message)
-                    ->setParameter('{{ value }}', $this->formatValue($value))
+                    ->setParameter('{{ value }}', $this->formatValue($element))
                     ->setCode(Unique::IS_NOT_UNIQUE)
                     ->addViolation();
 
diff --git a/Resources/translations/validators.ro.xlf b/Resources/translations/validators.ro.xlf
index 3d0b819a..3c0ace54 100644
--- a/Resources/translations/validators.ro.xlf
+++ b/Resources/translations/validators.ro.xlf
@@ -440,7 +440,7 @@
             </trans-unit>
             <trans-unit id="113">
                 <source>This URL is missing a top-level domain.</source>
-                <target state="needs-review-translation">Acest URL îi lipsește un domeniu de nivel superior.</target>
+                <target>Acestui URL îi lipsește un domeniu de nivel superior.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/Tests/Constraints/CssColorValidatorTest.php b/Tests/Constraints/CssColorValidatorTest.php
index 5c7904a8..6c298f82 100644
--- a/Tests/Constraints/CssColorValidatorTest.php
+++ b/Tests/Constraints/CssColorValidatorTest.php
@@ -396,7 +396,7 @@ public static function getInvalidHSL(): array
     }
 
     /**
-     * @dataProvider getInvalidHSL
+     * @dataProvider getInvalidHSLA
      */
     public function testInvalidHSLA($cssColor)
     {
diff --git a/Tests/Constraints/UniqueValidatorTest.php b/Tests/Constraints/UniqueValidatorTest.php
index 3c2dd9f2..0d5ccdb8 100644
--- a/Tests/Constraints/UniqueValidatorTest.php
+++ b/Tests/Constraints/UniqueValidatorTest.php
@@ -61,7 +61,7 @@ public static function getValidValues()
     /**
      * @dataProvider getInvalidValues
      */
-    public function testInvalidValues($value)
+    public function testInvalidValues($value, $expectedMessageParam)
     {
         $constraint = new Unique([
             'message' => 'myMessage',
@@ -69,7 +69,7 @@ public function testInvalidValues($value)
         $this->validator->validate($value, $constraint);
 
         $this->buildViolation('myMessage')
-             ->setParameter('{{ value }}', 'array')
+             ->setParameter('{{ value }}', $expectedMessageParam)
              ->setCode(Unique::IS_NOT_UNIQUE)
              ->assertRaised();
     }
@@ -79,12 +79,12 @@ public static function getInvalidValues()
         $object = new \stdClass();
 
         return [
-            yield 'not unique booleans' => [[true, true]],
-            yield 'not unique integers' => [[1, 2, 3, 3]],
-            yield 'not unique floats' => [[0.1, 0.2, 0.1]],
-            yield 'not unique string' => [['a', 'b', 'a']],
-            yield 'not unique arrays' => [[[1, 1], [2, 3], [1, 1]]],
-            yield 'not unique objects' => [[$object, $object]],
+            yield 'not unique booleans' => [[true, true], 'true'],
+            yield 'not unique integers' => [[1, 2, 3, 3], 3],
+            yield 'not unique floats' => [[0.1, 0.2, 0.1], 0.1],
+            yield 'not unique string' => [['a', 'b', 'a'], '"a"'],
+            yield 'not unique arrays' => [[[1, 1], [2, 3], [1, 1]], 'array'],
+            yield 'not unique objects' => [[$object, $object], 'object'],
         ];
     }
 
@@ -94,7 +94,7 @@ public function testInvalidValueNamed()
         $this->validator->validate([1, 2, 3, 3], $constraint);
 
         $this->buildViolation('myMessage')
-            ->setParameter('{{ value }}', 'array')
+            ->setParameter('{{ value }}', '3')
             ->setCode(Unique::IS_NOT_UNIQUE)
             ->assertRaised();
     }
@@ -174,7 +174,7 @@ public function testExpectsInvalidNonStrictComparison()
         ]));
 
         $this->buildViolation('myMessage')
-            ->setParameter('{{ value }}', 'array')
+            ->setParameter('{{ value }}', '1')
             ->setCode(Unique::IS_NOT_UNIQUE)
             ->assertRaised();
     }
@@ -200,7 +200,7 @@ public function testExpectsInvalidCaseInsensitiveComparison()
         ]));
 
         $this->buildViolation('myMessage')
-            ->setParameter('{{ value }}', 'array')
+            ->setParameter('{{ value }}', '"hello"')
             ->setCode(Unique::IS_NOT_UNIQUE)
             ->assertRaised();
     }
@@ -246,14 +246,14 @@ public static function getInvalidFieldNames(): array
     /**
      * @dataProvider getInvalidCollectionValues
      */
-    public function testInvalidCollectionValues(array $value, array $fields)
+    public function testInvalidCollectionValues(array $value, array $fields, string $expectedMessageParam)
     {
         $this->validator->validate($value, new Unique([
             'message' => 'myMessage',
         ], fields: $fields));
 
         $this->buildViolation('myMessage')
-            ->setParameter('{{ value }}', 'array')
+            ->setParameter('{{ value }}', $expectedMessageParam)
             ->setCode(Unique::IS_NOT_UNIQUE)
             ->assertRaised();
     }
@@ -264,23 +264,25 @@ public static function getInvalidCollectionValues(): array
             'unique string' => [[
                 ['lang' => 'eng', 'translation' => 'hi'],
                 ['lang' => 'eng', 'translation' => 'hello'],
-            ], ['lang']],
+            ], ['lang'], 'array'],
             'unique floats' => [[
                 ['latitude' => 51.509865, 'longitude' => -0.118092, 'poi' => 'capital'],
                 ['latitude' => 52.520008, 'longitude' => 13.404954],
                 ['latitude' => 51.509865, 'longitude' => -0.118092],
-            ], ['latitude', 'longitude']],
+            ], ['latitude', 'longitude'], 'array'],
             'unique int' => [[
                 ['id' => 1, 'email' => 'bar@email.com'],
                 ['id' => 1, 'email' => 'foo@email.com'],
-            ], ['id']],
+            ], ['id'], 'array'],
             'unique null' => [
                 [null, null],
                 [],
+                'null',
             ],
             'unique field null' => [
                 [['nullField' => null], ['nullField' => null]],
                 ['nullField'],
+                'array',
             ],
         ];
     }