diff --git a/climate-server.go b/climate-server.go
index 3b8392f..ea688b7 100644
--- a/climate-server.go
+++ b/climate-server.go
@@ -91,7 +91,7 @@ func sendLastSnapshot(w http.ResponseWriter, r *http.Request) {
 		sendInternalError(fmt.Errorf("couldn't read last snapshot from the database: %w", err), w, r)
 		return
 	}
-	json, err := createJsonFromSnapshotRecords(record)
+	json, err := createJsonFromSnapshotRecords([]*SnapshotRecord{record})
 	if err != nil {
 		sendInternalError(fmt.Errorf("couldn't create a json from the last record: %w", err), w, r)
 		return