diff --git a/linuxdeploy-plugin-gtk.sh b/linuxdeploy-plugin-gtk.sh
index c506690..612f902 100755
--- a/linuxdeploy-plugin-gtk.sh
+++ b/linuxdeploy-plugin-gtk.sh
@@ -149,6 +149,7 @@ if [ "$APPDIR" == "" ]; then
     exit 1
 fi
 
+APPDIR="$(realpath "$APPDIR")"
 mkdir -p "$APPDIR"
 
 if command -v pkgconf > /dev/null; then