diff --git a/update/calibre.sh b/update/calibre.sh
index b78efbb..e99fcb4 100644
--- a/update/calibre.sh
+++ b/update/calibre.sh
@@ -1,14 +1,15 @@
 #!/bin/bash
 
 calibre='/opt/apps/calibre/calibre-web-0.6.20'
-# get the pid of calibre, and write it into file /tmp/calibre_pids
-ps -ef | grep "$calibre/cps.py" | grep -v grep | awk '{print $2}' > /tmp/calibre_pids
+cd $calibre
+# get the pid of calibre, and write it into file calibre_pids
+ps -ef | grep "$calibre/cps.py" | grep -v grep | awk '{print $2}' > calibre_pids
 
 # if not exist, signifying that there is no calibre process
-if [[ ! -s /tmp/calibre_pids ]]; then
+if [[ ! -s calibre_pids ]]; then
     echo -e "\e[1;31mCannot terminate Calibre process cause there is no such things, will run calibre later automatically.\e[0m"
 else
-    for calibre_pid in `cat /tmp/calibre_pids`; do
+    for calibre_pid in `cat calibre_pids`; do
         kill -9 $calibre_pid > /dev/null 2>&1
     done
 fi