diff --git a/lib/__internal/EngineService.js b/lib/__internal/EngineService.js
index 6083948..b586977 100644
--- a/lib/__internal/EngineService.js
+++ b/lib/__internal/EngineService.js
@@ -51,7 +51,10 @@ class EngineService {
         ...newOptions,
         responseType: "buffer"
       });
-      if (headers["content-type"] === "application/json") {
+      if (
+        headers["content-type"] &&
+        headers["content-type"].substring(0, 16) === "application/json"
+      ) {
         return JSON.parse(body.toString("utf-8"));
       } else {
         return body;