diff --git a/README.md b/README.md
index 9a66b66..ea82acf 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,9 @@ object CheckCommand "check-mailbox" {
     "-H" = "$chm_host$"
     "-C" = "user:password"
     "-M" = "INBOX"
-    "-S" = "$ssl$"
+    "-S" = {
+           set_if = "$ssl$"
+    }
     "-w" = "1000"
     "-c" = "2000"
   }