diff --git a/public/app/plugins/datasource/cloudwatch/language/metric-math/language.ts b/public/app/plugins/datasource/cloudwatch/language/metric-math/language.ts
index 0c2de35a879..a26d879a9e4 100644
--- a/public/app/plugins/datasource/cloudwatch/language/metric-math/language.ts
+++ b/public/app/plugins/datasource/cloudwatch/language/metric-math/language.ts
@@ -7,6 +7,7 @@ export const METRIC_MATH_FNS = [
   'AVG',
   'CEIL',
   'DATAPOINT_COUNT',
+  'DB_PERF_INSIGHTS',
   'DIFF',
   'DIFF_TIME',
   'FILL',