diff --git a/lib/util.js b/lib/util.js
index 9e71201..2b01664 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -602,18 +602,24 @@ module.exports = {
         responseBody: ''
       };
     }
-    let headers = Object.keys(contentObj);
+    let headers = Object.keys(contentObj),
+      result = [];
 
     for (let i = 0; i < headers.length; i++) {
-      if (this.getHeaderFamily(headers[i])) {
-        cTypeHeader = headers[i];
-        hasComputedType = true;
-        if (headers[i].includes('json')) {
-          break;
-        }
+      if (this.getHeaderFamily(headers[i]) !== HEADER_TYPE.INVALID) {
+        result.push(headers[i]);
       }
     }
 
+    if (result[HEADER_TYPE.JSON]) {
+      cTypeHeader = result[HEADER_TYPE.JSON];
+      hasComputedType = true;
+    }
+    else if (result[HEADER_TYPE.XML]) {
+      cTypeHeader = result[HEADER_TYPE.XML];
+      hasComputedType = true;
+    }
+
     // if no JSON or XML, take whatever we have
     if (!hasComputedType) {
       cTypes = Object.keys(contentObj);