diff --git a/functions/appearance.zsh b/functions/appearance.zsh
index 2596013b..277274d8 100644
--- a/functions/appearance.zsh
+++ b/functions/appearance.zsh
@@ -2,13 +2,6 @@
 autoload -U colors
 colors -i
 
-# Set the GNU Screen window number.
-if [[ -n "$WINDOW" ]]; then
-  SCREEN_NO="%B$WINDOW%b "
-else
-  SCREEN_NO=""
-fi
-
 # Set the default prompt theme.
 PS1="%n@%m:%~%# "
 
diff --git a/functions/terminal.zsh b/functions/terminal.zsh
index 5c1c812d..e75137ab 100644
--- a/functions/terminal.zsh
+++ b/functions/terminal.zsh
@@ -3,6 +3,13 @@ if [[ "$TERM" == 'dumb' ]]; then
   return
 fi
 
+# Set the GNU Screen window number.
+if [[ -n "$WINDOW" ]]; then
+  SCREEN_NO="%B$WINDOW%b "
+else
+  SCREEN_NO=""
+fi
+
 # Fully supports GNU Screen, iTerm, and most modern xterm and rxvt terminals.
 # Partially supports Mac OS X Terminal since it can't set window and tab separately.
 # Usage: title "tab title" "window title"
@@ -37,4 +44,3 @@ function preexec {
   local CMD=${1[(wr)^(*=*|sudo|ssh|-*)]}
   title "$CMD" "%100>...>$2%<<"
 }
-