diff --git a/Mandatory-vs-Optional-Parameters.md b/Mandatory-vs-Optional-Parameters.md
index d3bfd43719c131b8d9cb1cc62d54cec70e8af790..670d6c897eb36c9be8020dda54b157ee0775621b 100644
--- a/Mandatory-vs-Optional-Parameters.md
+++ b/Mandatory-vs-Optional-Parameters.md
@@ -18,7 +18,7 @@ Optional parameters, useful for customizing the response, are:
 |timeformat|armtime, YYYYMMDD.hhmmss|armtime|1|
 |sincetime|YYYYMMDD|19700101|1|
 
-# Detailed Parameter Descriptions
+### Detailed Parameter Descriptions
 
 **dqrfields** are returned in the same order as specified. These fields correspond to the fields stored in a DQR.