diff --git a/sandbox/jenkins-test b/sandbox/jenkins-test
index 0b4c4d72..5e2fb4b0 100755
--- a/sandbox/jenkins-test
+++ b/sandbox/jenkins-test
@@ -62,8 +62,10 @@ export LANG="en_US.UTF-8"
 # ######################################### #
 # Remove conf files that's shouldn't exist. #
 # ######################################### #
-rm ~/.pt-*conf*
-rm ~/.my*
+(
+   rm ~/.pt-*conf*
+   rm ~/.my*
+)
 
 #############################
 # Check and start test env. #