diff --git a/src/Attribute/Attribute.php b/src/Attribute/Attribute.php
index 65a562b..66a666f 100644
--- a/src/Attribute/Attribute.php
+++ b/src/Attribute/Attribute.php
@@ -191,8 +191,8 @@ protected function doRead(&$object, $attributes = [])
     public function getFullKey()
     {
         if ($this->parent != null && $this->parent->name != null) {
-            $seperator = $this->parent instanceof AttributeSchema ? ':' : '.';
-            return $this->parent->getFullKey() . $seperator . $this->name;
+            $separator = $this->parent instanceof AttributeSchema ? ':' : '.';
+            return $this->parent->getFullKey() . $separator . $this->name;
         } else {
             return $this->name;
         }