diff --git a/skin/HBox/_anchor.png b/skin/hbox/_anchor.png
similarity index 100%
rename from skin/HBox/_anchor.png
rename to skin/hbox/_anchor.png
diff --git a/skin/HBox/active.png b/skin/hbox/active.png
similarity index 100%
rename from skin/HBox/active.png
rename to skin/hbox/active.png
diff --git a/skin/HBox/config.json b/skin/hbox/config.json
similarity index 100%
rename from skin/HBox/config.json
rename to skin/hbox/config.json
diff --git a/skin/HBox/inactive.png b/skin/hbox/inactive.png
similarity index 100%
rename from skin/HBox/inactive.png
rename to skin/hbox/inactive.png