diff --git a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
index e3013c46e5..f3915d44c0 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
@@ -412,14 +412,14 @@ class PropertyAccessor implements PropertyAccessorInterface
      */
     private function getReadAccessInfo($class, $property)
     {
-        $key = false !== strpbrk($key = $class.'..'.$property, '{}()/@:') ? rawurlencode($key) : $key;
+        $key = str_replace('\\', '.', $class).'..'.$property;
 
         if (isset($this->readPropertyCache[$key])) {
             return $this->readPropertyCache[$key];
         }
 
         if ($this->cacheItemPool) {
-            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_READ.str_replace('\\', '.', $key));
+            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_READ.rawurlencode($key));
             if ($item->isHit()) {
                 return $this->readPropertyCache[$key] = $item->get();
             }
@@ -587,14 +587,14 @@ class PropertyAccessor implements PropertyAccessorInterface
      */
     private function getWriteAccessInfo(string $class, string $property, $value): array
     {
-        $key = false !== strpbrk($key = $class.'..'.$property, '{}()/@:') ? rawurlencode($key) : $key;
+        $key = str_replace('\\', '.', $class).'..'.$property;
 
         if (isset($this->writePropertyCache[$key])) {
             return $this->writePropertyCache[$key];
         }
 
         if ($this->cacheItemPool) {
-            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_WRITE.str_replace('\\', '.', $key));
+            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_WRITE.rawurlencode($key));
             if ($item->isHit()) {
                 return $this->writePropertyCache[$key] = $item->get();
             }
@@ -753,8 +753,7 @@ class PropertyAccessor implements PropertyAccessorInterface
         }
 
         if ($this->cacheItemPool) {
-            $key = false !== strpbrk($propertyPath, '{}()/@:') ? rawurlencode($propertyPath) : $propertyPath;
-            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_PROPERTY_PATH.str_replace('\\', '.', $key));
+            $item = $this->cacheItemPool->getItem(self::CACHE_PREFIX_PROPERTY_PATH.rawurlencode($propertyPath));
             if ($item->isHit()) {
                 return $this->propertyPathCache[$propertyPath] = $item->get();
             }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
index eec2ee20a8..8ae36059c0 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
@@ -586,9 +586,13 @@ class PropertyAccessorTest extends TestCase
     {
         $obj = new \stdClass();
         $obj->{'@foo'} = 'bar';
+        $obj->{'a/b'} = '1';
+        $obj->{'a%2Fb'} = '2';
 
         $propertyAccessor = new PropertyAccessor(false, false, new ArrayAdapter());
         $this->assertSame('bar', $propertyAccessor->getValue($obj, '@foo'));
+        $this->assertSame('1', $propertyAccessor->getValue($obj, 'a/b'));
+        $this->assertSame('2', $propertyAccessor->getValue($obj, 'a%2Fb'));
     }
 
     /**