diff --git a/public/app/plugins/datasource/prometheus/querybuilder/components/MetricSelect.tsx b/public/app/plugins/datasource/prometheus/querybuilder/components/MetricSelect.tsx
index 111fc529fe5..5b48d9389d1 100644
--- a/public/app/plugins/datasource/prometheus/querybuilder/components/MetricSelect.tsx
+++ b/public/app/plugins/datasource/prometheus/querybuilder/components/MetricSelect.tsx
@@ -64,6 +64,7 @@ export function MetricSelect({ query, onChange, onGetMetrics }: Props) {
           className={styles.select}
           value={query.metric ? toOption(query.metric) : undefined}
           placeholder="Select metric"
+          virtualized
           allowCustomValue
           formatOptionLabel={formatOptionLabel}
           filterOption={customFilterOption}