diff --git a/config.example.json b/config.example.json
index 7245447f..fcc6bf73 100644
--- a/config.example.json
+++ b/config.example.json
@@ -53,7 +53,7 @@
     ],*/
     "app": {
         //threads_num: The number of IO threads, 1 by default, if the value is set to 0, the number of threads
-        //is the number of processors.
+        //is the number of CPU cores
         "threads_num": 1,
         //enable_session: False by default
         "enable_session": true,
diff --git a/drogon_ctl/templates/config.csp b/drogon_ctl/templates/config.csp
index 7245447f..fcc6bf73 100644
--- a/drogon_ctl/templates/config.csp
+++ b/drogon_ctl/templates/config.csp
@@ -53,7 +53,7 @@
     ],*/
     "app": {
         //threads_num: The number of IO threads, 1 by default, if the value is set to 0, the number of threads
-        //is the number of processors.
+        //is the number of CPU cores
         "threads_num": 1,
         //enable_session: False by default
         "enable_session": true,
diff --git a/test.sh b/test.sh
index 38c00426..74a201fa 100755
--- a/test.sh
+++ b/test.sh
@@ -70,5 +70,8 @@ if [ ! -f "drogon_test" ];then
     exit -1
 fi
 
+cd ../../
+rm -rf drogon_test
+
 echo "Everything is ok!"
 exit 0