diff --git a/.zshrc2 b/.zshrc2
index 1f4fd0e..d014280 100644
--- a/.zshrc2
+++ b/.zshrc2
@@ -58,4 +58,7 @@ antigen bundle https://gitee.com/dictxiong/zsh-autosuggestions
 antigen theme ys
 # apply 
 antigen apply
-# end of antigen config
\ No newline at end of file
+# end of antigen config
+
+# functions
+dotfile_path=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
\ No newline at end of file
diff --git a/install.sh b/install.sh
index 2161283..fe94650 100755
--- a/install.sh
+++ b/install.sh
@@ -89,7 +89,7 @@ setup_color() {
 }
 # END of color settings
 
-dotfile_path=$(cd $(dirname $0); pwd)
+dotfile_path=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 home_slashes=${HOME//\//\\\/}
 if [[ ! $dotfile_path == ${home_slashes}* ]]; then 
     fmt_fatal "\"$dotfile_path\" is not under \"$HOME\". aborting ..."