diff --git a/install.sh b/install.sh
index f28fc48..2bef750 100755
--- a/install.sh
+++ b/install.sh
@@ -66,15 +66,24 @@ echo -e "$targetdir2_1 $targetdir $targetdir2_2"
 sleep 1
 
 # alias entry in .bashrc or .zshrc
-#zshrc
+# .zshrc case 1
 echo $SHELL
 if [ $SHELL = "/usr/bin/zsh" ]; then
     echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.zshrc
 fi
-#bashrc
+# zshrc case 2
+echo $SHELL
+if [ $SHELL = "/bin/zsh" ]; then
+    echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.zshrc
+fi
+#bashrc case 1
 if [ $SHELL = "/usr/bin/bash" ]; then
     echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.bashrc
 fi
+# bashrc case 2
+if [ $SHELL = "/bin/bash" ]; then
+    echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.bashrc
+fi
 
 # collects all the information needed to execute the rsync command and creates it.
 echo -e "$collect \n"