diff --git a/data/core/keymap.lua b/data/core/keymap.lua
index 759362d1..8fd2b05b 100644
--- a/data/core/keymap.lua
+++ b/data/core/keymap.lua
@@ -77,7 +77,7 @@ local function remove_only(tbl, k, v)
 end
 
 
-function keymap.unbind(cmd, key)
+function keymap.unbind(key, cmd)
   remove_only(keymap.map, key, cmd)
   remove_only(keymap.reverse_map, cmd, key)
 end