diff --git a/src/server/web/pages/graph.rs b/src/server/web/pages/graph.rs
index d33e2b8..dec4a12 100644
--- a/src/server/web/pages/graph.rs
+++ b/src/server/web/pages/graph.rs
@@ -136,6 +136,7 @@ pub async fn get_graph(
 
 #[derive(Deserialize)]
 pub struct QueryGraphData {
+    #[serde(default)]
     metric: Vec<String>,
 }