diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 8f54c30c09..c1824ecafe 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -316,7 +316,7 @@ abstract class FrameworkExtensionTest extends TestCase
     public function testWorkflowAreValidated()
     {
         $this->expectException('Symfony\Component\Workflow\Exception\InvalidDefinitionException');
-        $this->expectExceptionMessage('A transition from a place/state must have an unique name. Multiple transitions named "go" from place/state "first" where found on StateMachine "my_workflow".');
+        $this->expectExceptionMessage('A transition from a place/state must have an unique name. Multiple transitions named "go" from place/state "first" were found on StateMachine "my_workflow".');
         $this->createContainerFromFile('workflow_not_valid');
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
index 66099e29cc..da540da12b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
@@ -56,7 +56,7 @@ class PhpFrameworkExtensionTest extends FrameworkExtensionTest
     public function testWorkflowValidationStateMachine()
     {
         $this->expectException('Symfony\Component\Workflow\Exception\InvalidDefinitionException');
-        $this->expectExceptionMessage('A transition from a place/state must have an unique name. Multiple transitions named "a_to_b" from place/state "a" where found on StateMachine "article".');
+        $this->expectExceptionMessage('A transition from a place/state must have an unique name. Multiple transitions named "a_to_b" from place/state "a" were found on StateMachine "article".');
         $this->createContainerFromClosure(function ($container) {
             $container->loadFromExtension('framework', [
                 'workflows' => [
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index 2c198d2ca7..8854a78d14 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -54,7 +54,7 @@
         "symfony/twig-bundle": "~2.8|~3.2|~4.0",
         "symfony/validator": "^4.1",
         "symfony/var-dumper": "^4.3",
-        "symfony/workflow": "^4.3",
+        "symfony/workflow": "^4.3.6",
         "symfony/yaml": "~3.4|~4.0",
         "symfony/property-info": "~3.4|~4.0",
         "symfony/lock": "~3.4|~4.0",
@@ -80,7 +80,7 @@
         "symfony/translation": "<4.3",
         "symfony/twig-bridge": "<4.1.1",
         "symfony/validator": "<4.1",
-        "symfony/workflow": "<4.3"
+        "symfony/workflow": "<4.3.6"
     },
     "suggest": {
         "ext-apcu": "For best performance of the system caches",
diff --git a/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php b/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
index b2a5c83b52..0971622737 100644
--- a/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
+++ b/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
@@ -37,7 +37,7 @@ class StateMachineValidator implements DefinitionValidatorInterface
             // Enforcing uniqueness of the names of transitions starting at each node
             $from = reset($froms);
             if (isset($transitionFromNames[$from][$transition->getName()])) {
-                throw new InvalidDefinitionException(sprintf('A transition from a place/state must have an unique name. Multiple transitions named "%s" from place/state "%s" where found on StateMachine "%s".', $transition->getName(), $from, $name));
+                throw new InvalidDefinitionException(sprintf('A transition from a place/state must have an unique name. Multiple transitions named "%s" from place/state "%s" were found on StateMachine "%s".', $transition->getName(), $from, $name));
             }
 
             $transitionFromNames[$from][$transition->getName()] = true;