diff --git a/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php b/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php
index 1e3117fd518f..b0aef4d0cf33 100644
--- a/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php
+++ b/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php
@@ -210,7 +210,7 @@ private function buildPathsFiltering(Command $command, $dir, array $paths, $not
             // Fixes 'not search' regex problems.
             if ($expr->isRegex()) {
                 $regex = $expr->getRegex();
-                $regex->prepend($regex->hasStartFlag() ? '' : '.*')->setEndJoker(!$regex->hasEndFlag());
+                $regex->prepend($regex->hasStartFlag() ? $dir.DIRECTORY_SEPARATOR : '.*')->setEndJoker(!$regex->hasEndFlag());
             } else {
                 $expr->prepend('*')->append('*');
             }
@@ -221,7 +221,7 @@ private function buildPathsFiltering(Command $command, $dir, array $paths, $not
                     ? ($expr->isCaseSensitive() ? '-regex' : '-iregex')
                     : ($expr->isCaseSensitive() ? '-path' : '-ipath')
                 )
-                ->arg($expr->prepend($dir.DIRECTORY_SEPARATOR)->renderPattern());
+                ->arg($expr->renderPattern());
         }
 
         $command->cmd(')');