diff --git a/src/Communication/Connection.php b/src/Communication/Connection.php
index de97c87..d7bc727 100644
--- a/src/Communication/Connection.php
+++ b/src/Communication/Connection.php
@@ -376,10 +376,10 @@ private function dispatchMessage(string $message, ?Session $session = null)
         $response = \json_decode($message, true);
 
         // if json not valid throw exception
-        $jsonError = \json_last_error();
-        if (\JSON_ERROR_NONE !== $jsonError) {
+        $jsonErrorId = \json_last_error();
+        if (\JSON_ERROR_NONE !== $jsonErrorId) {
             if ($this->isStrict()) {
-                throw new CannotReadResponse(\sprintf('Response from chrome remote interface is not a valid json response. JSON error: %s', $jsonError));
+                throw new CannotReadResponse(\sprintf('Response from chrome remote interface is not a valid json response. JSON error: %d: %s', $jsonErrorId, \json_last_error_msg()));
             }
 
             return false;