diff --git a/scripts/wp-search-replace.sh b/scripts/wp-search-replace.sh
index 582d429..1510a6d 100644
--- a/scripts/wp-search-replace.sh
+++ b/scripts/wp-search-replace.sh
@@ -225,7 +225,25 @@ if [[ -f "$CONFIG_FILE" && -w "$CONFIG_FILE" ]]; then
         info "Added https:// prefix to URL: $TARGET_URL"
     fi
     # shellcheck disable=SC2016  # we want literal single quotes inside sed replacement
-    sed -i -E "s|define\(\s*'WP_HOME',\s*'[^']*'\s*\);|define( 'WP_HOME', '${TARGET_URL}' );|; s|define\(\s*'WP_SITEURL',\s*'[^']*'\s*\);|define( 'WP_SITEURL', '${TARGET_URL}' );|" "$CONFIG_FILE" || warning "Failed to update wp-config.php"
+    # Replace existing definitions if they exist
+sed -i -E "s|define\(\s*'WP_HOME'\s*,\s*'[^']*'\s*\);|define( 'WP_HOME', '${TARGET_URL}' );|; s|define\(\s*'WP_SITEURL'\s*,\s*'[^']*'\s*\);|define( 'WP_SITEURL', '${TARGET_URL}' );|; s|\$_SERVER\['HTTP_HOST'\]\s*=\s*'[^']*';|\$_SERVER['HTTP_HOST'] = '${HOST_ONLY}';|" "$CONFIG_FILE" || warning "Failed to update wp-config.php"
+
+# If WP_HOME wasn't present, insert block above /* That's all */
+if ! grep -q "WP_HOME" "$CONFIG_FILE"; then
+    info "Inserting WP_HOME and WP_SITEURL constants into wp-config.php …"
+    awk -v url="$TARGET_URL" -v host="$HOST_ONLY" '
+        BEGIN{inserted=0}
+        /\/\* That\x27s all/{
+            print "\n// Added by wp-search-replace.sh";
+            print "define( \"WP_HOME\", \"" url "\" );";
+            print "define( \"WP_SITEURL\", \"" url "\" );";
+            print "if ( defined( \"WP_CLI\" ) && WP_CLI && ! isset( $_SERVER[\"HTTP_HOST\"] ) ) { $_SERVER[\"HTTP_HOST\"] = \"" host "\"; }";
+            inserted=1;
+        }
+        {print}
+        END{if(!inserted) exit 1}
+    ' "$CONFIG_FILE" > "$CONFIG_FILE.tmp" && mv "$CONFIG_FILE.tmp" "$CONFIG_FILE"
+fi
 else
     warning "wp-config.php not found or not writable; skipped WP_HOME / WP_SITEURL update."
 fi