diff --git a/lib/awful/menu.lua b/lib/awful/menu.lua
index 0635e7c58..42440e948 100644
--- a/lib/awful/menu.lua
+++ b/lib/awful/menu.lua
@@ -116,7 +116,7 @@ local function load_theme(a, b)
     ret.border = a.border_color or b.menu_border_color or b.border_normal or
                  fallback.menu_border_color or fallback.border_normal
     ret.border_width= a.border_width or b.menu_border_width or b.border_width or
-                      fallback.menu_border_width or fallback.border_width or 0
+                      fallback.menu_border_width or fallback.border_width or dpi(0)
     ret.fg_focus = a.fg_focus or b.menu_fg_focus or b.fg_focus or
                    fallback.menu_fg_focus or fallback.fg_focus
     ret.bg_focus = a.bg_focus or b.menu_bg_focus or b.bg_focus or
@@ -130,9 +130,9 @@ local function load_theme(a, b)
     ret.submenu = a.submenu or b.menu_submenu or b.submenu or
                       fallback.menu_submenu or fallback.submenu or "▶"
     ret.height = a.height or b.menu_height or b.height or
-                 fallback.menu_height or 16
+                 fallback.menu_height or dpi(16)
     ret.width = a.width or b.menu_width or b.width or
-                fallback.menu_width or 100
+                fallback.menu_width or dpi(100)
     ret.font = a.font or b.font or fallback.font
     for _, prop in ipairs({"width", "height", "menu_width"}) do
         if type(ret[prop]) ~= "number" then ret[prop] = tonumber(ret[prop]) end
diff --git a/themes/default/theme.lua b/themes/default/theme.lua
index 0a6b1792f..b0be48012 100644
--- a/themes/default/theme.lua
+++ b/themes/default/theme.lua
@@ -24,7 +24,7 @@ theme.fg_focus      = "#ffffff"
 theme.fg_urgent     = "#ffffff"
 theme.fg_minimize   = "#ffffff"
 
-theme.useless_gap   = 0
+theme.useless_gap   = dpi(0)
 theme.border_width  = dpi(1)
 theme.border_normal = "#000000"
 theme.border_focus  = "#535d6c"
diff --git a/themes/sky/theme.lua b/themes/sky/theme.lua
index c7d531766..0aa7d1bd6 100644
--- a/themes/sky/theme.lua
+++ b/themes/sky/theme.lua
@@ -25,7 +25,7 @@ theme.fg_focus      = "#2e3436"
 theme.fg_urgent     = "#2e3436"
 theme.fg_minimize   = "#2e3436"
 
-theme.useless_gap   = 0
+theme.useless_gap   = dpi(0)
 theme.border_width  = dpi(2)
 theme.border_normal = "#dae3e0"
 theme.border_focus  = "#729fcf"
diff --git a/themes/zenburn/theme.lua b/themes/zenburn/theme.lua
index af10fae60..2b6fa08a8 100644
--- a/themes/zenburn/theme.lua
+++ b/themes/zenburn/theme.lua
@@ -4,6 +4,7 @@
 -------------------------------
 
 local themes_path = require("gears.filesystem").get_themes_dir()
+local dpi = require("beautiful.xresources").apply_dpi
 
 -- {{{ Main
 local theme = {}
@@ -24,8 +25,8 @@ theme.bg_systray = theme.bg_normal
 -- }}}
 
 -- {{{ Borders
-theme.useless_gap   = 0
-theme.border_width  = 2
+theme.useless_gap   = dpi(0)
+theme.border_width  = dpi(2)
 theme.border_normal = "#3F3F3F"
 theme.border_focus  = "#6F6F6F"
 theme.border_marked = "#CC9393"
@@ -66,8 +67,8 @@ theme.mouse_finder_color = "#CC9393"
 -- Variables set for theming the menu:
 -- menu_[bg|fg]_[normal|focus]
 -- menu_[border_color|border_width]
-theme.menu_height = 15
-theme.menu_width  = 100
+theme.menu_height = dpi(15)
+theme.menu_width  = dpi(100)
 -- }}}
 
 -- {{{ Icons