diff --git a/gtk2_ardour/themes/blueberry-milk-ardour.colors b/gtk2_ardour/themes/blueberry_milk-ardour.colors
similarity index 100%
rename from gtk2_ardour/themes/blueberry-milk-ardour.colors
rename to gtk2_ardour/themes/blueberry_milk-ardour.colors
diff --git a/gtk2_ardour/themes/clear-gray-ardour.colors b/gtk2_ardour/themes/clear_gray-ardour.colors
similarity index 100%
rename from gtk2_ardour/themes/clear-gray-ardour.colors
rename to gtk2_ardour/themes/clear_gray-ardour.colors