diff --git a/templates/_fix-256-palette.colortemplate b/templates/_fix-256-palette.colortemplate
index a1a3007..a1d4e21 100644
--- a/templates/_fix-256-palette.colortemplate
+++ b/templates/_fix-256-palette.colortemplate
@@ -17,7 +17,7 @@ if [ "${TERM%%-*}" = 'linux' ]; then
   return 2>/dev/null || exit 0
 fi
 
-if [ -n "$TMUX" ]; then
+if [[ "$TERM" =~ "^(tmux|screen).*" && -n "$TMUX" ]]; then
   # tell tmux to pass the escape sequences through
   # (Source: http://permalink.gmane.org/gmane.comp.terminal-emulators.tmux.user/1324)
   printf_template="\033Ptmux;\033\033]4;%d;rgb:%s\007\033\\"