diff --git a/public/app/plugins/datasource/cloudwatch/components/MathExpressionQueryField.tsx b/public/app/plugins/datasource/cloudwatch/components/MathExpressionQueryField.tsx
index aa960f9769b..b8a42a2837d 100644
--- a/public/app/plugins/datasource/cloudwatch/components/MathExpressionQueryField.tsx
+++ b/public/app/plugins/datasource/cloudwatch/components/MathExpressionQueryField.tsx
@@ -72,6 +72,7 @@ export function MathExpressionQueryField({
         onBlur={(value) => {
           if (value !== query) {
             onChange(value);
+            onRunQuery();
           }
         }}
         onBeforeEditorMount={(monaco: Monaco) =>