#2757

diff --git a/src/Cubist/Util/Json.php b/src/Cubist/Util/Json.php
index f9ba40dc586e71d42797231f8a9e58dd25d5c74e..850752910426f6deb6ca9cdfb69cf2e6db0ae1d4 100644 (file)
--- a/src/Cubist/Util/Json.php
+++ b/src/Cubist/Util/Json.php
@@ -58,7 +58,7 @@ class Json
             }
         }
 
-        if(is_scalar($v)){
+        if (null === $v || is_bool($v) || is_numeric($v) || is_scalar($v)) {
             return $v;
         }