diff --git a/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php b/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
index 7dbe694940..6330cabec9 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;