diff --git a/colors.zsh b/colors.zsh
index 508668d..774b100 100755
--- a/colors.zsh
+++ b/colors.zsh
@@ -23,6 +23,9 @@ BCyan='\e[1;36m'        # Cyan
 BWhite='\e[1;37m'       # White
 
 # Underline
+if command -v tput &>/dev/null; then
+    UNDERLINE="$(tput smul)"
+fi
 UBlack='\e[4;30m'       # Black
 URed='\e[4;31m'         # Red
 UGreen='\e[4;32m'       # Green