diff --git a/public/app/features/expressions/types.ts b/public/app/features/expressions/types.ts
index 41c8aa457fe..c3b1ea2c091 100644
--- a/public/app/features/expressions/types.ts
+++ b/public/app/features/expressions/types.ts
@@ -36,7 +36,7 @@ export const gelTypes: Array<SelectableValue<ExpressionQueryType>> = [
     value: ExpressionQueryType.classic,
     label: 'Classic condition',
     description:
-      'Takes one or more time series returned from a query or an expression and checks if any of the series match the condition.',
+      'Takes one or more time series returned from a query or an expression and checks if any of the series match the condition. Disables multi-dimensional alerts for this rule.',
   },
   {
     value: ExpressionQueryType.threshold,