diff --git a/public/app/plugins/datasource/prometheus/components/monaco-query-field/MonacoQueryField.tsx b/public/app/plugins/datasource/prometheus/components/monaco-query-field/MonacoQueryField.tsx
index 9e9ed94f7d4..a16e5393283 100644
--- a/public/app/plugins/datasource/prometheus/components/monaco-query-field/MonacoQueryField.tsx
+++ b/public/app/plugins/datasource/prometheus/components/monaco-query-field/MonacoQueryField.tsx
@@ -16,6 +16,7 @@ const options: CodeEditorMonacoOptions = {
   scrollBeyondLastLine: false,
   renderLineHighlight: 'none',
   fontSize: 14,
+  suggestFontSize: 12,
   // we need `fixedOverflowWidgets` because otherwise in grafana-dashboards
   // the popup is clipped by the panel-visualizations.
   fixedOverflowWidgets: true,