diff --git a/climate-server.go b/climate-server.go
index f35809f..235bdfc 100644
--- a/climate-server.go
+++ b/climate-server.go
@@ -47,7 +47,7 @@ func saveSnapshot(w http.ResponseWriter, r *http.Request) error {
 	if err != nil {
 		return fmt.Errorf("couldn't create snapshot from JSON: %w", err)
 	}
-	query := fmt.Sprintf("INSERT INTO `snapshots` (`temp`, `humidity`, `co2`, `time`, `id`) VALUES (%v, %v, %v, '%v', NULL);",
+	query := fmt.Sprintf("INSERT INTO `snapshots` (`temp`, `humidity`, `co2`, `time`, `id`) VALUES (%v, %v, %v, `%v`, NULL);",
 		snapshotSub.Temp,
 		snapshotSub.Humidity,
 		snapshotSub.Co2,