diff --git a/src/Monolog/Formatter/JsonFormatter.php b/src/Monolog/Formatter/JsonFormatter.php
index 8d10b8253..96a059179 100644
--- a/src/Monolog/Formatter/JsonFormatter.php
+++ b/src/Monolog/Formatter/JsonFormatter.php
@@ -186,7 +186,7 @@ protected function normalizeException($e)
         $data = array(
             'class' => Utils::getClass($e),
             'message' => $e->getMessage(),
-            'code' => $e->getCode(),
+            'code' => (int) $e->getCode(),
             'file' => $e->getFile().':'.$e->getLine(),
         );
 
diff --git a/src/Monolog/Formatter/MongoDBFormatter.php b/src/Monolog/Formatter/MongoDBFormatter.php
index eb7be849f..bd9e4c02b 100644
--- a/src/Monolog/Formatter/MongoDBFormatter.php
+++ b/src/Monolog/Formatter/MongoDBFormatter.php
@@ -87,7 +87,7 @@ protected function formatException(\Exception $exception, $nestingLevel)
         $formattedException = array(
             'class' => Utils::getClass($exception),
             'message' => $exception->getMessage(),
-            'code' => $exception->getCode(),
+            'code' => (int) $exception->getCode(),
             'file' => $exception->getFile() . ':' . $exception->getLine(),
         );
 
diff --git a/src/Monolog/Formatter/NormalizerFormatter.php b/src/Monolog/Formatter/NormalizerFormatter.php
index 9865394e0..867f6fb71 100644
--- a/src/Monolog/Formatter/NormalizerFormatter.php
+++ b/src/Monolog/Formatter/NormalizerFormatter.php
@@ -129,7 +129,7 @@ protected function normalizeException($e)
         $data = array(
             'class' => Utils::getClass($e),
             'message' => $e->getMessage(),
-            'code' => $e->getCode(),
+            'code' => (int) $e->getCode(),
             'file' => $e->getFile().':'.$e->getLine(),
         );