diff --git a/rc/bashrc b/rc/bashrc
index c18bd923..95dd4806 100755
--- a/rc/bashrc
+++ b/rc/bashrc
@@ -975,4 +975,9 @@ fi
 #TODO: FIXME:
 TERM=xterm-256color
 
+# If $TMUX, then TERM is tmux-256color
+if [ -v TMUX ]; then
+	TERM=tmux-256color
+fi
+
 # vim: filetype=bash
diff --git a/rc/zshrc b/rc/zshrc
index 192ae836..0e3f4c9a 100755
--- a/rc/zshrc
+++ b/rc/zshrc
@@ -968,4 +968,9 @@ fi
 #TODO: FIXME:
 TERM=xterm-256color
 
+# If $TMUX, then TERM is tmux-256color
+if [ -v TMUX ]; then
+	TERM=tmux-256color
+fi
+
 # vim: filetype=zsh