diff --git a/README.md b/README.md
index 5687790c..910ef6d8 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,8 @@ Example:
 
 ## Environment variables
 
+Value in **bold** s the default value.
+
 ##### DMS_SSL
 
   - **empty** => SSL disabled