diff --git a/back/config_sample.env b/back/config_sample.env
index 11169ed..7c7aabd 100644
--- a/back/config_sample.env
+++ b/back/config_sample.env
@@ -1,9 +1,9 @@
 # sample value with default config:
 
-#DB_HOSTNAME="localhost"
+#DB_HOSTNAME=localhost
 #DB_PORT=15032
-#DB_NAME="karideo"
-#DB_USER="root"
-#DB_PASSWORD="postgress_password"
+#DB_NAME=karideo
+#DB_USER=root
+#DB_PASSWORD=postgress_password