diff --git a/.i3/config.d/01-base b/.i3/config.d/01-base
--- a/.i3/config.d/01-base
+++ b/.i3/config.d/01-base
@@ -1,3 +1,5 @@
 # i3 config file (v4)
 #
 # Please see http://i3wm.org/docs/userguide.html for a complete reference!
+set $mod Mod4
+