diff --git a/.bashrc b/.bashrc
index 60b4910..ac92be9 100644
--- a/.bashrc
+++ b/.bashrc
@@ -49,7 +49,7 @@ function http11()
 }
 #
 # Hack for gnome-terminal
-if [ "$COLORTERM" == "gnome-terminal" ]; then
+if [ "$COLORTERM" == "gnome-terminal" -a -z "$TMUX" -a -z "$SCREEN" ]; then
     export TERM=xterm-256color
 fi
 #
diff --git a/.zshrc b/.zshrc
index 0824484..98e51fe 100644
--- a/.zshrc
+++ b/.zshrc
@@ -28,7 +28,7 @@ if [[ -x /usr/bin/xdg-open ]]; then
 fi
 #
 # Hack for gnome-terminal
-if [[ "$COLORTERM" == "gnome-terminal" ]]; then
+if [[ "$COLORTERM" == "gnome-terminal" && -z "$TMUX" && -z "$WINDOW" ]]; then
     export TERM=xterm-256color
 fi
 #