diff --git a/update.sh b/update.sh
index 04df0f6..4c2e37d 100755
--- a/update.sh
+++ b/update.sh
@@ -152,13 +152,18 @@ function load_gnome_terminal_profiles() {
 function install_fish() {
 	echo "--- Ensuring fish is current shell"
 	local fish_good=0
-    if ! which fish 1>/dev/null
-    then
+	if ! which fish 1>/dev/null
+	then
 		fish_good=1
 	fi
 
 	local current_version=$(fish --version | cut -d " " -f 3)
-	if [ $(echo "${current_version}\n3.4.0" | sort | head -1) != "3.4.0" ]
+	local current_version_test=$(cat <<EOF
+${current_version}
+3.4.0
+EOF
+				)
+	if [ $(echo "${current_version_test}" | sort -n | head -1) != "3.4.0" ]
 	then
 		echo "Wrong version of fish ${current_version}"
 		fish_good=1