diff --git a/Options-and-Params.md b/Options-and-Params.md
index a4776ec..c3787d6 100644
--- a/Options-and-Params.md
+++ b/Options-and-Params.md
@@ -1,11 +1,11 @@
 
 ***
-##Usage:  
+## Usage:  
 acme.sh  command ...[parameters]....  
 
 ***
 
-##Commands:  
+## Commands:  
   **--help, -h**               Show this help message.  
   **--version, -v**            Show version info.  
   **--install**                Install acme.sh to your system.  
@@ -34,7 +34,7 @@ acme.sh  command ...[parameters]....
 
 ***
 
-##Parameters:  
+## Parameters:  
   **--domain, -d   domain.tld**         Specifies a domain, used to issue, renew or revoke etc.  
   **--force, -f**                       Used to force to install or force to renew a cert immediately.  
   **--staging, --test**                 Use staging server, just for test.