diff --git a/src/dfcx_scrapi/tools/nlu_evals.py b/src/dfcx_scrapi/tools/nlu_evals.py
index d8c84977..5d106747 100644
--- a/src/dfcx_scrapi/tools/nlu_evals.py
+++ b/src/dfcx_scrapi/tools/nlu_evals.py
@@ -244,7 +244,8 @@ def run_evals(self, df: pd.DataFrame, chunk_size: int = 300,
         # When a NO_MATCH occurs, the detected_intent field will be blank
         # this replaces with NO_MATCH string, which will allow for easier stats
         # calculation downstream
-        results.detected_intent.replace({"": "NO_MATCH"}, inplace=True)
+        results['detected_intent'] = results['detected_intent'].replace(
+            {"": "NO_MATCH"})
 
         logging.info(f"{logsx} {eval_run_display_name} COMPLETE {logsx}")