diff --git a/public/assets/js/app.js b/public/assets/js/app.js
index a14180b..2a5f97a 100644
--- a/public/assets/js/app.js
+++ b/public/assets/js/app.js
@@ -48,11 +48,10 @@
 			non_www:			true,
 			cdn:				false,
 
-			index:				'',
-			index_html:			false,
+			index:				'index.php',
+			fallback:			true,
 
 			php:				'7.2',
-			index_php:			true,
 			wordpress:			false,
 
 			file_structure:		'unified',
@@ -343,17 +342,21 @@
 		};
 
 		$scope.isIndexHtml = function() {
-			return $scope.data.index_html;
+			return $scope.data.index === 'index.html';
+		};
+
+		$scope.isIndexPhp = function() {
+			return $scope.isPHP() && $scope.data.index === 'index.php';
+		};
+
+		$scope.isFallback = function() {
+			return $scope.data.fallback && (!$scope.isIndexPhp() || $scope.isPHP);
 		};
 
 		$scope.isPHP = function() {
 			return $scope.data.php !== 'off';
 		};
 
-		$scope.isIndexPhp = function() {
-			return $scope.isPHP() && $scope.data.index_php;
-		};
-
 		$scope.isWordPress = function() {
 			return $scope.isPHP() && $scope.data.wordpress;
 		};
diff --git a/public/index.html b/public/index.html
index f508207..ae8b483 100644
--- a/public/index.html
+++ b/public/index.html
@@ -186,18 +186,27 @@
 						</div>
 						<div class="card">
 							<div class="card-body">
-								<div class="form-group">
-									<label class="form-label">
-										<span tooltips tooltip-template="Defines files that will be used as an index."><code>index</code></span>
-									</label>
-									<input type="text" class="form-control form-control-sm" ng-model="data.index" placeholder="index.html{{ isPHP() ? ' index.php' : '' }}">
+								<label class="form-label">File structure</label>
+								<div class="form-subgroup">
+									<div class="form-check">
+										<input class="form-check-input" type="radio" id="unified" ng-model="data.file_structure" value="unified">
+										<label class="form-check-label" for="unified">
+											<span tooltips tooltip-template="Combine configuration to a single file.<br><br><i>(if possible)</i>">unified</span>
+										</label>
+									</div>
 								</div>
-								<div class="form-check mb-2">
-									<input class="form-check-input" type="checkbox" id="index_html" ng-model="data.index_html">
-									<label class="form-check-label" for="index_html">
-										<span tooltips tooltip-template="Pass unhandled requests to index.html.<br><br><i>Angular, React, Vue.js, Ember.js</i>...">index.html <small>handler</small></span>
-									</label>
+								<div class="form-subgroup">
+									<div class="form-check">
+										<input class="form-check-input" type="radio" id="modularized" ng-model="data.file_structure" value="modularized">
+										<label class="form-check-label" for="modularized">
+											<span tooltips tooltip-template="Multiple configuration files<br><br><i>(ideal for multi-domain environment)</i>">modularized</span>
+										</label>
+									</div>
 								</div>
+							</div>
+						</div>
+						<div class="card">
+							<div class="card-body">
 								<div class="form-group">
 									<div class="input-group input-group-sm" tooltips tooltip-template="PHP-FPM via TCP or unix socket.">
 										<div class="input-group-prepend">
@@ -214,14 +223,6 @@
 										</select>
 									</div>
 								</div>
-								<div class="form-subgroup" ng-if="isPHP()" ng-cloak>
-									<div class="form-check">
-										<input class="form-check-input" type="checkbox" id="index_php" ng-model="data.index_php">
-										<label class="form-check-label" for="index_php">
-											<span tooltips tooltip-template="Pass unhandled requests to index.php.<br><br><i>Laravel, Lumen, Symfony, Zend, CodeIgniter, Yii, CakePHP, Slim...</i>">index.php <small>handler</small></span>
-										</label>
-									</div>
-								</div>
 								<div class="form-subgroup" ng-if="isPHP()" ng-cloak>
 									<div class="form-check">
 										<input class="form-check-input" type="checkbox" id="wordpress" ng-model="data.wordpress">
@@ -234,23 +235,25 @@
 						</div>
 						<div class="card">
 							<div class="card-body">
-								<label class="form-label">File structure</label>
+								<label class="form-label"><code tooltips tooltip-template="Defines the file that will be used as an index, optionally configures fallback of unhandled requests.">index</code></label>
 								<div class="form-subgroup">
 									<div class="form-check">
-										<input class="form-check-input" type="radio" id="unified" ng-model="data.file_structure" value="unified">
-										<label class="form-check-label" for="unified">
-											<span tooltips tooltip-template="Combine configuration to a single file.<br><br><i>(if possible)</i>">unified</span>
-										</label>
+										<input class="form-check-input" type="radio" id="index.html" ng-model="data.index" value="index.html">
+										<label class="form-check-label" for="index.html">index.html</label>
 									</div>
 								</div>
-								<div class="form-subgroup">
+								<div class="form-subgroup" ng-if="isPHP()">
 									<div class="form-check">
-										<input class="form-check-input" type="radio" id="modularized" ng-model="data.file_structure" value="modularized">
-										<label class="form-check-label" for="modularized">
-											<span tooltips tooltip-template="Multiple configuration files<br><br><i>(ideal for multi-domain environment)</i>">modularized</span>
-										</label>
+										<input class="form-check-input" type="radio" id="index.php" ng-model="data.index" value="index.php">
+										<label class="form-check-label" for="index.php">index.php</label>
 									</div>
 								</div>
+								<div class="form-check mt-2">
+									<input class="form-check-input" type="checkbox" id="fallback" ng-model="data.fallback">
+									<label class="form-check-label" for="fallback">
+										<span tooltips tooltip-template="Fallback of unhandled requests.">fallback <small>({{ isIndexPhp() ? 'index.php' : 'index.html' }})</small></span>
+									</label>
+								</div>
 							</div>
 						</div>
 						<div class="card">
diff --git a/public/templates/conf/_php.conf.html b/public/templates/conf/_php.conf.html
index a2f3e7e..b606a86 100644
--- a/public/templates/conf/_php.conf.html
+++ b/public/templates/conf/_php.conf.html
@@ -1,6 +1,6 @@
 <!--
-	✔ modularized --><span ng-if="isModularized()"># index
-index {{ isIndexHtml() ? 'index.html ' : '' }}index.php;
+	✔ modularized && ✔ index.php --><span ng-if="isModularized() && isIndexPhp()"># index.php
+index index.php;
 
 </span><!--
 
diff --git a/public/templates/conf/example.com.conf.html b/public/templates/conf/example.com.conf.html
index c2ac2bd..6739e84 100644
--- a/public/templates/conf/example.com.conf.html
+++ b/public/templates/conf/example.com.conf.html
@@ -3,13 +3,13 @@ server {<!--
 	✘ HTTPS || ✘ forceHTTPS --><span ng-if="!isHTTPS() || !isForceHTTPS()">
 	listen {{ data.ipv4 !== '*' ? data.ipv4 + ':' : '' }}80;<!--
 
-		✔ IPv6 --><span ng-if="isIPv6()">
+	✔ IPv6 --><span ng-if="isIPv6()">
 	listen [{{ data.ipv6 }}]:80;</span></span><!--
 
 	✔ HTTPS --><span ng-if="isHTTPS()">
 	listen {{ data.ipv4 !== '*' ? data.ipv4 + ':' : '' }}443 ssl{{ isHTTP2() ? ' http2' : '' }};<!--
 
-		✔ IPv6 --><span ng-if="isIPv6()">
+	✔ IPv6 --><span ng-if="isIPv6()">
 	listen [{{ data.ipv6 }}]:443 ssl{{ isHTTP2() ? ' http2' : '' }};</span></span>
 
 	server_name {{ isWWW() ? 'www.' : '' }}{{ domain() }};<!--
@@ -19,9 +19,12 @@ server {<!--
 	root $base{{ data.document_root }};</span><!--
 
 	✘ PHP --><span ng-if="!isPHP()">
-	root /var/www/{{ domain() }}{{ data.document_root }};</span>
+	root /var/www/{{ domain() }}{{ data.document_root }};</span><!--
 
-	index {{ data.index ? data.index : 'index.html' + (isPHP() ? ' index.php' : '') }};<!--
+	✔ unified && ✔ index.php --><span ng-if="isUnified() && isIndexPhp()">
+
+	# index.php
+	index index.php;</span><!--
 
 	✔ HTTPS --><span ng-if="isHTTPS()">
 
@@ -32,16 +35,11 @@ server {<!--
 	✔ Let's Encrypt --><span ng-if="isCertLetsEncrypt()">
 	ssl_trusted_certificate /etc/letsencrypt/live/{{ domain() }}/fullchain.pem;</span></span><!--
 
-	✔ unified && ✔ PHP --><span ng-if="isUnified() && isPHP()">
+	✔ fallback --><span ng-if="isFallback()">
 
-	# index
-	index {{ isIndexHtml() ? 'index.html ' : '' }}index.php;</span><!--
-
-	(✔ PHP && ✔ index.php) || ✔ index.html --><span ng-if="isIndexPhp() || isIndexHtml()">
-
-	# $uri{{ isIndexHtml() ? ', index.html' : '' }}{{ isIndexPhp() ? ', index.php' : '' }}
+	# $uri{{ isFallback() ? (', ' + data.index) : '' }}
 	location / {
-		try_files $uri $uri/ {{ isIndexHtml() ? '/index.html' : '' }}{{ isIndexHtml() && isIndexPhp() ? ' ' : '' }}{{ isIndexPhp() ? '/index.php?$query_string' : '' }};
+		try_files $uri $uri/ {{ isIndexHtml() ? '/index.html' : '' }}{{ isIndexPhp() ? '/index.php?$query_string' : '' }};
 	}</span><!--
 
 	✔ unified --><span ng-if="isModularized()">