diff --git a/src/JsonSchema/Constraints/UndefinedConstraint.php b/src/JsonSchema/Constraints/UndefinedConstraint.php
index bdb95f4a..e2d64026 100644
--- a/src/JsonSchema/Constraints/UndefinedConstraint.php
+++ b/src/JsonSchema/Constraints/UndefinedConstraint.php
@@ -329,7 +329,6 @@ protected function validateOfProperties(&$value, $schema, JsonPointer $path, $i
         if (isset($schema->anyOf)) {
             $isValid = false;
             $startErrors = $this->getErrors();
-            $caughtException = null;
             foreach ($schema->anyOf as $anyOf) {
                 $initErrors = $this->getErrors();
                 try {
@@ -349,24 +348,21 @@ protected function validateOfProperties(&$value, $schema, JsonPointer $path, $i
         }
 
         if (isset($schema->oneOf)) {
-            $allErrors = array();
             $matchedSchemas = 0;
             $startErrors = $this->getErrors();
             foreach ($schema->oneOf as $oneOf) {
+                $initErrors = $this->getErrors();
                 try {
-                    $this->errors = array();
                     $this->checkUndefined($value, $oneOf, $path, $i);
-                    if (count($this->getErrors()) == 0) {
+                    if (count($this->getErrors()) == count($initErrors)) {
                         $matchedSchemas++;
                     }
-                    $allErrors = array_merge($allErrors, array_values($this->getErrors()));
                 } catch (ValidationException $e) {
                     // deliberately do nothing here - validation failed, but we want to check
                     // other schema options in the OneOf field.
                 }
             }
             if ($matchedSchemas !== 1) {
-                $this->addErrors(array_merge($allErrors, $startErrors));
                 $this->addError(ConstraintError::ONE_OF(), $path);
             } else {
                 $this->errors = $startErrors;
diff --git a/tests/Constraints/OfPropertiesTest.php b/tests/Constraints/OfPropertiesTest.php
index ff8bded3..8d78b8aa 100644
--- a/tests/Constraints/OfPropertiesTest.php
+++ b/tests/Constraints/OfPropertiesTest.php
@@ -79,11 +79,11 @@ public function getInvalidTests()
                     array(
                         'property'   => 'prop2',
                         'pointer'    => '/prop2',
-                        'message'    => 'Array value found, but a string is required',
+                        'message'    => 'Array value found, but a number is required',
                         'constraint' => array(
                             'name' => 'type',
                             'params' => array(
-                                'expected'   => 'a string',
+                                'expected'   => 'a number',
                                 'found'      => 'array'
                             )
                         ),
@@ -92,11 +92,11 @@ public function getInvalidTests()
                     array(
                         'property'   => 'prop2',
                         'pointer'    => '/prop2',
-                        'message'    => 'Array value found, but a number is required',
+                        'message'    => 'Array value found, but a string is required',
                         'constraint' => array(
                             'name' => 'type',
                             'params' => array(
-                                'expected'   => 'a number',
+                                'expected'   => 'a string',
                                 'found'      => 'array'
                             )
                         ),