diff --git a/doc/development.md b/doc/development.md
index 96fe02823..496231dd7 100644
--- a/doc/development.md
+++ b/doc/development.md
@@ -20,9 +20,9 @@ sudo ./test.sh
 
 Followings are multus logging best practices:
 
-* Add `logging.Debugf()` at the begining of function
+* Add `logging.Debugf()` at the begining of functions
 * In case of error handling, use `logging.Errorf()` with given error info
-* `logging.Panicf()` only be used at very critical error (it should NOT used usually)
+* `logging.Panicf()` only be used for critical errors (it should NOT normally be used)
 
 
 ## CI Introduction