diff --git a/src/core/appdir_root_setup.cpp b/src/core/appdir_root_setup.cpp
index c0e8cee..6ababee 100644
--- a/src/core/appdir_root_setup.cpp
+++ b/src/core/appdir_root_setup.cpp
@@ -178,18 +178,18 @@ namespace linuxdeploy {
                     << std::endl
                     << "# autogenerated by linuxdeploy" << std::endl
                     << std::endl
-                    << "export APPDIR=${APPDIR:-$(readlink -f $(dirname \"$0\"))}" << std::endl
+                    << "this_dir=$(readlink -f $(dirname \"$0\"))" << std::endl
                     << std::endl;
 
                 std::for_each(bf::directory_iterator(appRunHooksPath), bf::directory_iterator{}, [&oss](const bf::path& p) {
                     if (!bf::is_regular_file(p))
                         return;
 
-                    oss << "source \"$APPDIR\"/" << APPRUN_HOOKS_DIRNAME << "/" << p.filename();
+                    oss << "source \"$this_dir\"/" << APPRUN_HOOKS_DIRNAME << "/" << p.filename();
                 });
 
                 oss << std::endl
-                    << "exec \"$APPDIR\"/AppRun.wrapped" << std::endl;
+                    << "exec \"$this_dir\"/AppRun.wrapped" << std::endl;
 
                 // first we need to make sure we're not running this more than once
                 // this might cause more harm than good