diff --git a/Makefile b/Makefile
index 8414dfe..c221b1c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-#makefile for build package 
+# makefile for build package 
 
 build_root=$(shell pwd)
 project=ems
@@ -17,11 +17,11 @@ web_root=$(build_root)/../web.ems
 package_file=$(package_name).tgz
 
 # 获取当前时间
-current_date=$(shell `date "+%Y-%m-%d %H:%M:%S"`)
+current_date=$(shell date "+%Y-%m-%d %H:%M:%S")
 # 文件路径
 vfile=$(extra_dir)/emsVersion
 # 读取版本信息
-version=$(shell `grep "Version:" $(vfile) | awk '{print $3}'`)
+version=$(shell grep "Version:" $(vfile) | awk '{print $3}')
 
 package:
 	# 输出版本信息和更新后的日期