diff --git a/install/core/SystemHelper.php b/install/core/SystemHelper.php
index 504dabe18d..1686a42f57 100644
--- a/install/core/SystemHelper.php
+++ b/install/core/SystemHelper.php
@@ -197,41 +197,45 @@ class SystemHelper
 		return (defined("PHP_BINDIR"))? PHP_BINDIR.DIRECTORY_SEPARATOR.'php' : 'php';
 	}
 
-	public function getChmodCommand($path, $permissions = array('755'), $isFile = null)
+	public function getChmodCommand($path, $permissions = array('755'), $isSudo = false, $isFile = null)
 	{
 		$path = $this->getFullPath($path);
 
+		$sudoStr = $isSudo ? 'sudo ' : '';
+
 		if (is_string($permissions)) {
 			$permissions = (array) $permissions;
 		}
 
 		if (!isset($isFile) && count($permissions) == 1) {
-			return 'chmod -R '.$permissions[0].' '.$path;
+			return $sudoStr.'chmod -R '.$permissions[0].' '.$path;
 		}
 
 		$bufPerm = (count($permissions) == 1) ?  array_fill(0, 2, $permissions[0]) : $permissions;
 
 		$commands = array();
-		$commands[] = 'chmod '.$bufPerm[0].' $(find '.$path.' -type f)';
-		$commands[] = 'chmod '.$bufPerm[1].' $(find '.$path.' -type d)';
+		$commands[] = $sudoStr.'chmod '.$bufPerm[0].' $(find '.$path.' -type f)';
+		$commands[] = $sudoStr.'chmod '.$bufPerm[1].' $(find '.$path.' -type d)';
 
 		if (count($permissions) >= 2) {
-			return implode(' && ', $commands);
+			return implode('; ', $commands);
 		}
 
 		return $isFile ? $commands[0] : $commands[1];
 	}
 
-	public function getChownCommand($path)
+	public function getChownCommand($path, $isSudo = false)
 	{
 		$owner = posix_getuid();
 		$group = posix_getegid();
 
+		$sudoStr = $isSudo ? 'sudo ' : '';
+
 		if (empty($owner) || empty($group)) {
 			return null;
 		}
 
-		return 'chown -R '.$owner.':'.$group.' '.$this->getFullPath($path);
+		return $sudoStr.'chown -R '.$owner.':'.$group.' '.$this->getFullPath($path);
 	}
 
 	public function getFullPath($path)
@@ -243,12 +247,12 @@ class SystemHelper
 		return $this->getRootDir() . $path;
 	}
 
-	public function getPermissionCommands($path, $permissions = array('644', '755'), $isFile = null)
+	public function getPermissionCommands($path, $permissions = array('644', '755'), $isSudo = false, $isFile = null)
 	{
 		$commands = array();
-		$commands[] = $this->getChmodCommand($path, $permissions, $isFile);
+		$commands[] = $this->getChmodCommand($path, $permissions, $isSudo, $isFile);
 
-		$chown = $this->getChownCommand($path);
+		$chown = $this->getChownCommand($path, $isSudo);
 		if (isset($chown)) {
 			$commands[] = $chown;
 		}
diff --git a/install/core/actions/checkWritable.php b/install/core/actions/checkWritable.php
index 1d9dcb98bb..327024824b 100644
--- a/install/core/actions/checkWritable.php
+++ b/install/core/actions/checkWritable.php
@@ -18,7 +18,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
- ************************************************************************/ 
+ ************************************************************************/
 
 ob_start();
 $result = array('success' => true, 'errorMsg' => '');
@@ -29,7 +29,8 @@ if (!$installer->isWritable()) {
  	foreach ($urls as &$url) {
 		$url = '        '.$url;
  	}
-	$result['errorMsg'] = $langs['Cannot write to files'].':<br>'.implode('<br>', $urls);
+	$result['errorMsg'] = $langs['Permission denied to files'].':<br>'.implode('<br>', $urls);
+	$result['errorFixInstruction'] = $systemHelper->getPermissionCommands('', array('644', '755'));
 }
 
 ob_clean();
diff --git a/install/core/actions/fixAjaxPermission.php b/install/core/actions/fixAjaxPermission.php
index d300bf1179..5f27c98641 100644
--- a/install/core/actions/fixAjaxPermission.php
+++ b/install/core/actions/fixAjaxPermission.php
@@ -30,7 +30,7 @@ if (!empty($_REQUEST['url'])) {
 	else {
 		$result['success'] = false;
 		$result['errorMsg'] = $_REQUEST['url'];
-		$result['errorFixInstruction'] = $systemHelper->getPermissionCommands($_REQUEST['url'], array('644', '755'));
+		$result['errorFixInstruction'] = $systemHelper->getPermissionCommands('', array('644', '755'));
 	}
 }
 
diff --git a/install/core/i18n/en_US.php b/install/core/i18n/en_US.php
index a9f4c77f16..6ab2c67ff5 100644
--- a/install/core/i18n/en_US.php
+++ b/install/core/i18n/en_US.php
@@ -23,7 +23,8 @@
 return array(
 	'Main page title' => 'Welcome to EspoCRM',
 	'Main page header' => '',
-	'Bad init Permission' => 'Permission denied for "{*}" directory. Please set 775 for "{*}" or just execute this command in the terminal <pre><b>{C}</b></pre>',
+	'Bad init Permission' => 'Permission denied for "{*}" directory. Please set 775 for "{*}" or just execute this command in the terminal <pre><b>{C}</b></pre>
+	Operation not permitted? Try this one: {CSU}',
 	'Start page title' => 'License Agreement',
 	'Step1 page title' => 'License Agreement',
 	'License Agreement' => 'License Agreement',
@@ -90,7 +91,7 @@ return array(
 	'Cannot create user' => 'Cannot create user',
 	'Permission denied' => 'Permission denied',
 	'permissionInstruction' => '<br>Run this in Terminal<pre><b>"{C}"</b></pre>',
-	'Cannot write to files' => 'Cannot write to file(s)',
+	'Permission denied to files' => 'Permission denied to file(s)',
 	'Can not save settings' => 'Can not save settings',
 	'Cannot save preferences' => 'Cannot save preferences',
 
diff --git a/install/index.php b/install/index.php
index a4c8225bb9..61ce909108 100644
--- a/install/index.php
+++ b/install/index.php
@@ -44,6 +44,7 @@ if (!$systemHelper->initWritable()) {
 	$message = $langs['Bad init Permission'];
 	$message = str_replace('{*}', $dir, $message);
 	$message = str_replace('{C}', $systemHelper->getPermissionCommands($dir, '775'), $message);
+	$message = str_replace('{CSU}', $systemHelper->getPermissionCommands($dir, '775', true), $message);
 	die($message);
 }