diff --git a/Cpanel/Service/Abstract.php b/Cpanel/Service/Abstract.php
index c0f1efe..a183b41 100644
--- a/Cpanel/Service/Abstract.php
+++ b/Cpanel/Service/Abstract.php
@@ -515,7 +515,8 @@ protected function arrayType($arr)
             );
         }
         ksort($arr);
-        $fkey = array_shift(array_keys($arr));
+        $keys = array_keys($arr);
+        $fkey = array_shift($keys);
         if (is_int($fkey)) {
             return self::API1ARGS;
         }
@@ -617,4 +618,4 @@ public function setHash($hash)
         return $this;
     }
 }
-?>
\ No newline at end of file
+?>