diff --git a/x-pack/plugins/aiops/common/api/stream_reducer.ts b/x-pack/plugins/aiops/common/api/stream_reducer.ts
index 5e37df418c6a..597527e80dae 100644
--- a/x-pack/plugins/aiops/common/api/stream_reducer.ts
+++ b/x-pack/plugins/aiops/common/api/stream_reducer.ts
@@ -37,7 +37,7 @@ export function streamReducer(
     case API_ACTION_NAME.ADD_CHANGE_POINTS_HISTOGRAM:
       const changePoints = state.changePoints.map((cp) => {
         const cpHistogram = action.payload.find(
-          (h) => h.fieldName === cp.fieldName && h.fieldValue && cp.fieldName
+          (h) => h.fieldName === cp.fieldName && h.fieldValue === cp.fieldValue
         );
         if (cpHistogram) {
           cp.histogram = cpHistogram.histogram;