diff --git a/src/Monolog/Formatter/NormalizerFormatter.php b/src/Monolog/Formatter/NormalizerFormatter.php
index 95b3de36..080e1ab0 100644
--- a/src/Monolog/Formatter/NormalizerFormatter.php
+++ b/src/Monolog/Formatter/NormalizerFormatter.php
@@ -108,6 +108,7 @@ class NormalizerFormatter implements FormatterInterface
             if (isset($frame['file'])) {
                 $data['trace'][] = $frame['file'].':'.$frame['line'];
             } else {
+                $this->convertResourceArgs($frame);
                 $data['trace'][] = json_encode($frame);
             }
         }
@@ -136,4 +137,26 @@ class NormalizerFormatter implements FormatterInterface
 
         return json_encode($data);
     }
+
+    /**
+     * This method checks recursively for resource args inside the frame, since json_encode is choking on them.
+     *
+     * @param array &$frame Reference to current frame
+     */
+    private function convertResourceArgs(array &$frame)
+    {
+        foreach ($frame as $key => &$item) {
+            if (is_scalar($item)) {
+                continue;
+            }
+
+            if (is_resource($item)) {
+                $frame[$key] = (string) $item;
+            }
+
+            if (is_array($item)) {
+                $this->convertResourceArgs($item);
+            }
+        }
+    }
 }
diff --git a/tests/Monolog/Formatter/GelfMessageFormatterTest.php b/tests/Monolog/Formatter/GelfMessageFormatterTest.php
index 3f47a09a..d92a2104 100644
--- a/tests/Monolog/Formatter/GelfMessageFormatterTest.php
+++ b/tests/Monolog/Formatter/GelfMessageFormatterTest.php
@@ -182,6 +182,46 @@ class GelfMessageFormatterTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('pair', $message_array['_EXTkey']);
     }
 
+    /**
+     * @covers Monolog\Formatter\GelfMessageFormatter::format
+     */
+    public function testExceptionObjectWithResourceTrace()
+    {
+        // This happens i.e. in React promises or Guzzle streams where stream wrappers are registered
+        // and no file or line are included in the trace because it's treated as internal function
+        set_error_handler(function ($errno, $errstr, $errfile, $errline ) {
+            throw new \ErrorException($errstr, 0, $errno, $errfile, $errline);
+        });
+
+        try {
+            $resource = fopen('php://memory', '+w');
+            // Just do something stupid with a resource as argument
+            strpos($resource);
+        } catch (\Exception $e) {
+        }
+
+        // restore the error handler
+        restore_error_handler();
+
+        $formatter = new GelfMessageFormatter();
+        $record = array(
+            'level' => Logger::ERROR,
+            'level_name' => 'ERROR',
+            'channel' => 'meh',
+            'context' => array('from' => 'logger', 'exception' => $e),
+            'datetime' => new \DateTime("@0"),
+            'extra' => array(),
+            'message' => 'log'
+        );
+
+        $message = $formatter->format($record);
+
+        $this->assertRegExp(
+            '%\\\\"resource\\\\":\\\\"Resource id #\d+\\\\"%',
+            $message->getAdditional('ctxt_exception')
+        );
+    }
+
     private function isLegacy()
     {
         return interface_exists('\Gelf\IMessagePublisher');