diff --git a/highlight.go b/highlight.go
index 70b1410..c52c9b3 100644
--- a/highlight.go
+++ b/highlight.go
@@ -9,7 +9,7 @@ import (
 func (q *QueryHighlight) Map() map[string]interface{} {
 	results := structs.Map(q.params)
 	if q.highlightQuery != nil {
-		results["query"] = q.highlightQuery.Map()
+		results["highlight_query"] = q.highlightQuery.Map()
 	}
 	if q.fields != nil && len(q.fields) > 0 {
 		fields := make(map[string]interface{})