diff --git a/install.sh b/install.sh
index fc55a35..e4302a7 100644
--- a/install.sh
+++ b/install.sh
@@ -2,11 +2,13 @@
 
 # something or other about android and tmux using PREFIX
 #: "${PREFIX:=''}"
-if [ -z "$PREFIX" ]; then
-  PREFIX=""
+MY_ROOT=""
+if [ -z "${PREFIX-}" ]; then
+  MY_ROOT=""
+else
+  MY_ROOT="$PREFIX"
 fi
-
-# Not every platform has or needs sudo, gotta save them O(1)s
+# Not every platform has or needs sudo, gotta save them O(1)s...
 sudo_cmd=""
 ((EUID)) && [[ -z "$ANDROID_ROOT" ]] && sudo_cmd="sudo"
 
@@ -79,14 +81,14 @@ install_for_systemd()
   echo "Installing as systemd service"
   echo ""
   dap_dl "$installer_base/$my_app_system_service" "$my_app_dir/$my_app_system_service"
-  $sudo_cmd mv "$my_app_dir/$my_app_system_service" "$PREFIX/$my_app_system_service"
-  $sudo_cmd chown -R root:root "$PREFIX/$my_app_system_service"
-  $sudo_cmd chmod 644 "$PREFIX/$my_app_system_service"
+  $sudo_cmd mv "$my_app_dir/$my_app_system_service" "$MY_ROOT/$my_app_system_service"
+  $sudo_cmd chown -R root:root "$MY_ROOT/$my_app_system_service"
+  $sudo_cmd chmod 644 "$MY_ROOT/$my_app_system_service"
 
   dap_dl "$installer_base/$my_app_system_tmpfiles" "$my_app_dir/$my_app_system_tmpfiles"
-  $sudo_cmd mv "$my_app_dir/$my_app_system_tmpfiles" "$PREFIX/$my_app_system_tmpfiles"
-  $sudo_cmd chown -R root:root "$PREFIX/$my_app_system_tmpfiles"
-  $sudo_cmd chmod 644 "$PREFIX/$my_app_system_tmpfiles"
+  $sudo_cmd mv "$my_app_dir/$my_app_system_tmpfiles" "$MY_ROOT/$my_app_system_tmpfiles"
+  $sudo_cmd chown -R root:root "$MY_ROOT/$my_app_system_tmpfiles"
+  $sudo_cmd chmod 644 "$MY_ROOT/$my_app_system_tmpfiles"
 
   $sudo_cmd systemctl stop "${my_app_name}.service" >/dev/null 2>/dev/null
   $sudo_cmd systemctl daemon-reload
@@ -103,11 +105,11 @@ install_for_launchd()
   echo ""
   # See http://www.launchd.info/
   dap_dl "$installer_base/$my_app_launchd_service" "$my_app_dir/$my_app_launchd_service"
-  $sudo_cmd mv "$my_app_dir/$my_app_launchd_service" "$PREFIX/$my_app_launchd_service"
-  $sudo_cmd chown root:wheel "$PREFIX/$my_app_launchd_service"
-  $sudo_cmd chmod 0644 "$PREFIX/$my_app_launchd_service"
-  $sudo_cmd launchctl unload -w "$PREFIX/$my_app_launchd_service" >/dev/null 2>/dev/null
-  $sudo_cmd launchctl load -w "$PREFIX/$my_app_launchd_service"
+  $sudo_cmd mv "$my_app_dir/$my_app_launchd_service" "$MY_ROOT/$my_app_launchd_service"
+  $sudo_cmd chown root:wheel "$MY_ROOT/$my_app_launchd_service"
+  $sudo_cmd chmod 0644 "$MY_ROOT/$my_app_launchd_service"
+  $sudo_cmd launchctl unload -w "$MY_ROOT/$my_app_launchd_service" >/dev/null 2>/dev/null
+  $sudo_cmd launchctl load -w "$MY_ROOT/$my_app_launchd_service"
 
   echo "$my_app_name started with launchd"
 }
@@ -115,7 +117,7 @@ install_for_launchd()
 install_service()
 {
   installable=""
-  if [ -d "$PREFIX/etc/systemd/system" ]; then
+  if [ -d "$MY_ROOT/etc/systemd/system" ]; then
     install_for_systemd
     installable="true"
   fi