diff --git a/term-keys-konsole.el b/term-keys-konsole.el
index 164576b..4ac03a3 100644
--- a/term-keys-konsole.el
+++ b/term-keys-konsole.el
@@ -31,6 +31,11 @@
 (require 'term-keys)
 
 
+(defgroup term-keys/konsole nil
+  "`term-keys' options for the Konsole terminal emulator."
+  :group 'term-keys)
+
+
 (define-widget 'term-keys/konsole-modifier 'lazy
   "Choice for Konsole key binding modifiers and state flags."
   :type '(choice (const "Shift")
@@ -63,7 +68,7 @@ for this modifier."
 	  (term-keys/konsole-modifier :tag "Super")
 	  (term-keys/konsole-modifier :tag "Hyper")
 	  (term-keys/konsole-modifier :tag "Alt"))
-  :group 'term-keys)
+  :group 'term-keys/konsole)
 
 
 (defun term-keys/konsole-keytab ()
diff --git a/term-keys-linux.el b/term-keys-linux.el
index fb18e8b..ac789e7 100644
--- a/term-keys-linux.el
+++ b/term-keys-linux.el
@@ -31,6 +31,11 @@
 (require 'term-keys)
 
 
+(defgroup term-keys/linux nil
+  "`term-keys' options for the Linux TTY."
+  :group 'term-keys)
+
+
 (define-widget 'term-keys/linux-modifier 'lazy
   "Choice for Linux modifiers for keymap files."
   :type '(choice (const "Shift")
@@ -60,7 +65,7 @@ nil indicates that there is no mapping for this modifier."
 	  (term-keys/linux-modifier :tag "Super")
 	  (term-keys/linux-modifier :tag "Hyper")
 	  (term-keys/linux-modifier :tag "Alt"))
-  :group 'term-keys)
+  :group 'term-keys/linux)
 
 
 (defcustom term-keys/linux-first-function-key 13
diff --git a/term-keys-st.el b/term-keys-st.el
index 352a0cf..b12f9c6 100644
--- a/term-keys-st.el
+++ b/term-keys-st.el
@@ -31,6 +31,11 @@
 (require 'term-keys)
 
 
+(defgroup term-keys/st nil
+  "`term-keys' options for the st terminal emulator."
+  :group 'term-keys)
+
+
 (define-widget 'term-keys/x11-modifier 'lazy
   "Choice for X11 key modifier state flags."
   :type '(choice (const "Shift")
@@ -60,7 +65,7 @@ there is no mapping for this modifier."
 	  (term-keys/x11-modifier :tag "Super")
 	  (term-keys/x11-modifier :tag "Hyper")
 	  (term-keys/x11-modifier :tag "Alt"))
-  :group 'term-keys)
+  :group 'term-keys/st)
 
 
 (defun term-keys/x11-apply-mod-state (key shift lock control mod1 mod2 mod3 mod4 mod5)