diff --git a/src/ragas/metrics/_nv_metrics.py b/src/ragas/metrics/_nv_metrics.py
index 6276cb71c..bcf8bb76c 100644
--- a/src/ragas/metrics/_nv_metrics.py
+++ b/src/ragas/metrics/_nv_metrics.py
@@ -134,8 +134,8 @@ async def _single_turn_ascore(
                         query=sample.user_input,
                         answer0="Reference Answer",
                         answer1="User Answer",
-                        sentence_inference=sample.reference,
-                        sentence_true=sample.response,
+                        sentence_inference=sample.response,
+                        sentence_true=sample.reference,
                     )
                 )
                 req1 = self.llm.agenerate_text(