diff --git a/themes/xresources/theme.lua b/themes/xresources/theme.lua
index a1cea1a2..6be76e7b 100644
--- a/themes/xresources/theme.lua
+++ b/themes/xresources/theme.lua
@@ -42,6 +42,9 @@ theme.border_marked = xrdb.color10
 -- Example:
 --theme.taglist_bg_focus = "#ff0000"
 
+theme.tooltip_fg = theme.fg_normal
+theme.tooltip_bg = theme.bg_normal
+
 -- Variables set for theming the menu:
 -- menu_[bg|fg]_[normal|focus]
 -- menu_[border_color|border_width]