diff --git a/tweak.sh b/tweak.sh
index 4fadbe57..5e1339aa 100755
--- a/tweak.sh
+++ b/tweak.sh
@@ -4,9 +4,9 @@ animate_fix(){
     cursor=$1
     file=$2
 
-    path=./$cursor/bitmaps/$file.in
-    #sort -k 4 ./move/left_ptr_watch.in
-    mv -f $path $path.bak
+    path="./$cursor/bitmaps/$file.in"
+    sort -k 4 -o "$path" "$path"
+    mv -f "$path" "$path.bak"
 
     #j for total size 24,28,32,40,48,56,64,72,80,88,96 = 11
     for j in {1..11}
@@ -14,22 +14,30 @@ animate_fix(){
         for i in {1..60}
         do
         line=`sed -n '1~60'p $path.bak | sed -n "$j"p`
+        # echo "$line"
         number=`echo $i | awk '{ printf "%04i\n", $0 }'`
+        # echo "$number"
         line=${line/${file}_0001.png/${file}_${number}.png}
+        # echo "$line"
         echo "$line" >> $path
         
         #echo "$line"
         done
     done
 
-    fixed_line=`sed 's/[0-9] [0-9]*$/25/' $path`
+    fixed_line=`sed 's/[0-9][0-9]*$/40/' $path`
     echo "$fixed_line" > $path
 
     rm -rf $path.bak
 }
 
-animate_fix "$1" "left_ptr_watch"
-animate_fix "$1" "watch"
+if [ "$1" != "" ]; then
+    animate_fix "$1" "left_ptr_watch"
+    animate_fix "$1" "watch"
+else
+    exit 1
+fi
+
 
 #if script generate error or success
 if [ $? -ne 0 ]