diff --git a/scripts/hosts-config.sh b/scripts/hosts-config.sh
index f456b316ec..b3109a0c9b 100755
--- a/scripts/hosts-config.sh
+++ b/scripts/hosts-config.sh
@@ -13,14 +13,16 @@ write_entries() {
 
     if grep -q "^# HEAT_HOSTS_START" "$file"; then
         temp=$(mktemp)
-        awk -v v="$entries" '/^# HEAT_HOSTS_START/ {
-            print $0
-            print v
-            f=1
-            }f &&!/^# HEAT_HOSTS_END$/{next}/^# HEAT_HOSTS_END$/{f=0}!f' "$file" > "$temp"
-            echo "INFO: Updating hosts file $file, check below for changes"
-            diff "$file" "$temp" || true
-            cat "$temp" > "$file"
+        (
+        sed '/^# HEAT_HOSTS_START/,$d' "$file"
+        echo -ne "\n# HEAT_HOSTS_START - Do not edit manually within this section!\n"
+        echo "$entries"
+        echo -ne "# HEAT_HOSTS_END\n\n"
+        sed '1,/^# HEAT_HOSTS_END/d' "$file"
+        ) > "$temp"
+        echo "INFO: Updating hosts file $file, check below for changes"
+        diff "$file" "$temp" || true
+        cat "$temp" > "$file"
     else
         echo -ne "\n# HEAT_HOSTS_START - Do not edit manually within this section!\n" >> "$file"
         echo "$entries" >> "$file"