diff --git a/fish/functions/cvsd.fish b/fish/functions/cvsd.fish
index 841e3ae..f7d2fc4 100644
--- a/fish/functions/cvsd.fish
+++ b/fish/functions/cvsd.fish
@@ -2,9 +2,9 @@ function cvsd --wraps 'cvs diff'
     if type -q colordiff
         command cvs diff -uN $argv | colordiff | less -FRX
     else
-        set -l red (tput setaf 1)
-        set -l green (tput setaf 2)
-        set -l reset (tput sgr0)
+        set -l red (printf "\033[31m")
+        set -l green (printf "\033[32m")
+        set -l reset (printf "\033[0m")
         cvs diff -uN $argv | sed "s/^+.*\$/$green&$reset/" |
             sed "s/^-.*\$/$red&$reset/" | less -FRX
     end
diff --git a/fish/functions/fld.fish b/fish/functions/fld.fish
index d083da9..fef9d09 100644
--- a/fish/functions/fld.fish
+++ b/fish/functions/fld.fish
@@ -2,9 +2,9 @@ function fld --wraps 'fossil diff'
     if type -q colordiff
         command fossil diff -N $argv | colordiff | less -FRX
     else
-        set -l red (tput setaf 1)
-        set -l green (tput setaf 2)
-        set -l reset (tput sgr0)
+        set -l red (printf "\033[31m")
+        set -l green (printf "\033[32m")
+        set -l reset (printf "\033[0m")
         fossil diff -N $argv | sed "s/^+.*\$/$green&$reset/" |
             sed "s/^-.*\$/$red&$reset/" | less -FRX
     end
diff --git a/zshrc b/zshrc
index 5f187f6..84e38f5 100644
--- a/zshrc
+++ b/zshrc
@@ -230,9 +230,9 @@ __has_command tmux && alias tmux="tmux -f $XDG_CONFIG_HOME/tmux/tmux.conf"
 
 if ! __has_command colordiff; then
 	colordiff() {
-		red="$(tput setaf 1)"
-		green="$(tput setaf 2)"
-		reset="$(tput sgr0)"
+		local red=$(printf "\033[31m")
+		local green=$(printf "\033[32m")
+		local reset=$(printf "\033[0m")
 		sed "s/^+.*$/$green&$reset/" | sed "s/^-.*$/$red&$reset/"
 	}
 fi