diff --git a/bin/scripts/test-fonts.sh b/bin/scripts/test-fonts.sh
index 8ec37547a..3c45fe3a1 100755
--- a/bin/scripts/test-fonts.sh
+++ b/bin/scripts/test-fonts.sh
@@ -89,7 +89,7 @@ function print-decimal-unicode-range() {
 function print-unicode-ranges() {
   echo ''
 
-  local arr=($@)
+  local arr=("$@")
   local len=$#
   local combinedRanges=()
 
@@ -99,7 +99,7 @@ function print-unicode-ranges() {
     local startDecimal=$((16#$start))
     local endDecimal=$((16#$end))
 
-    combinedRanges+=($(seq "${startDecimal}" "${endDecimal}"))
+    mapfile -t combinedRanges < <(seq "$startDecimal" "$endDecimal")
 
   done
 
diff --git a/install.sh b/install.sh
index 5948791ca..1f9dac932 100755
--- a/install.sh
+++ b/install.sh
@@ -287,7 +287,7 @@ case $mode in
 esac
 
 # Reset font cache on Linux
-if [[ -n $(which fc-cache) ]]; then
+if [[ -n $(command -v fc-cache) ]]; then
   [ "$quiet" = false ] && fc-cache -vf "$font_dir"
   [ "$quiet" = true ] && fc-cache -f "$font_dir"
   case $? in