diff --git a/application/Espo/Core/Upgrades/Actions/Base.php b/application/Espo/Core/Upgrades/Actions/Base.php
index 777968d485..52e7f7ad0a 100644
--- a/application/Espo/Core/Upgrades/Actions/Base.php
+++ b/application/Espo/Core/Upgrades/Actions/Base.php
@@ -23,6 +23,7 @@
 namespace Espo\Core\Upgrades\Actions;
 
 use Espo\Core\Utils\Util;
+use Espo\Core\Utils\System;
 use Espo\Core\Utils\Json;
 use Espo\Core\Exceptions\Error;
 use vierbergenlars\SemVer;
@@ -180,37 +181,47 @@ abstract class Base
      */
     protected function isAcceptable()
     {
+        $manifest = $this->getManifest();
+
         $res = $this->checkPackageType();
-        $res &= $this->checkVersions();
+
+        //check php version
+        if (isset($manifest['php'])) {
+            $res &= $this->checkVersions($manifest['php'], System::getPhpVersion(), 'Your PHP version does not support this installation package.');
+        }
+
+        //check acceptableVersions
+        if (isset($manifest['acceptableVersions'])) {
+            $res &= $this->checkVersions($manifest['acceptableVersions'], $this->getConfig()->get('version'), 'Your EspoCRM version doesn\'t match for this installation package.');
+        }
 
         return (bool) $res;
     }
 
-    protected function checkVersions()
+    protected function checkVersions($versionList, $currentVersion, $errorMessage = '')
     {
-        $manifest = $this->getManifest();
-
-        /** check acceptable versions */
-        $version = $manifest['acceptableVersions'];
-        if (empty($version)) {
+        if (empty($versionList)) {
             return true;
         }
 
-        if (is_string($version)) {
-            $version = (array) $version;
+        if (is_string($versionList)) {
+            $versionList = (array) $versionList;
         }
 
-        $currentVersion = $this->getConfig()->get('version');
+        try {
+            $semver = new SemVer\version($currentVersion);
+        } catch (\Exception $e) {
+            $GLOBALS['log']->error('Cannot recognize currentVersion ['.$currentVersion.'], error: '.$e->getMessage().'.');
+            return;
+        }
 
-        $semver = new SemVer\version($currentVersion);
-
-        foreach ($version as $strVersion) {
+        foreach ($versionList as $version) {
 
             $isInRange = false;
             try {
-                $isInRange = $semver->satisfies(new SemVer\expression($strVersion));
+                $isInRange = $semver->satisfies(new SemVer\expression($version));
             } catch (\Exception $e) {
-                $GLOBALS['log']->error('Installer [acceptableVersions]: '.$e->getMessage().'.');
+                $GLOBALS['log']->error('Version identification error: '.$e->getMessage().'.');
             }
 
             if ($isInRange) {
@@ -218,7 +229,7 @@ abstract class Base
             }
         }
 
-        $this->throwErrorAndRemovePackage('Your EspoCRM version doesn\'t match for this installation package.');
+        $this->throwErrorAndRemovePackage($errorMessage);
     }
 
     protected function checkPackageType()
diff --git a/tests/Espo/Core/Upgrades/Actions/BaseTest.php b/tests/Espo/Core/Upgrades/Actions/BaseTest.php
index fa2afc6e67..4cf802803e 100644
--- a/tests/Espo/Core/Upgrades/Actions/BaseTest.php
+++ b/tests/Espo/Core/Upgrades/Actions/BaseTest.php
@@ -162,7 +162,7 @@ class BaseTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals( json_decode($manifest,true), $this->reflection->invokeMethod('getManifest') );
     }
 
-    public function acceptableData()
+    public function acceptableVersions()
     {
         return array(
           array( '11.5.2' ),
@@ -182,32 +182,18 @@ class BaseTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * @dataProvider acceptableData
+     * @dataProvider acceptableVersions
      */
-    public function testIsAcceptable($version, $currentVersion = null)
+    public function testCheckVersions($versions, $currentVersion = null)
     {
         if (!isset($currentVersion)) {
             $currentVersion = $this->currentVersion;
         }
 
-        $this->objects['config']
-            ->expects($this->once())
-            ->method('get')
-            ->will($this->returnValue($currentVersion));
-
-        $this->reflection->setProperty('data', array('manifest' => array('acceptableVersions' => $version)));
-        $this->assertTrue( $this->reflection->invokeMethod('isAcceptable') );
+        $this->assertTrue( $this->reflection->invokeMethod('checkVersions', array($versions, $currentVersion, 'error') ) );
     }
 
-    public function testIsAcceptableEmpty()
-    {
-        $version = array();
-
-        $this->reflection->setProperty('data', array('manifest' => array('acceptableVersions' => $version)));
-        $this->assertTrue( $this->reflection->invokeMethod('isAcceptable') );
-    }
-
-    public function acceptableDataFalse()
+    public function unacceptableVersions()
     {
         return array(
           array( '1.*', ),
@@ -219,9 +205,9 @@ class BaseTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * @dataProvider acceptableDataFalse
+     * @dataProvider unacceptableVersions
      */
-    public function testIsAcceptableFalse($version, $currentVersion = null)
+    public function testCheckVersionsException($versions, $currentVersion = null)
     {
         if (!isset($currentVersion)) {
             $currentVersion = $this->currentVersion;
@@ -229,13 +215,15 @@ class BaseTest extends \PHPUnit_Framework_TestCase
 
         $this->setExpectedException('\Espo\Core\Exceptions\Error');
 
-        $this->objects['config']
-            ->expects($this->once())
-            ->method('get')
-            ->will($this->returnValue($currentVersion));
+        $this->reflection->invokeMethod('checkVersions', array($versions, $currentVersion, 'error'));
+    }
+
+    public function testIsAcceptableEmpty()
+    {
+        $version = array();
 
         $this->reflection->setProperty('data', array('manifest' => array('acceptableVersions' => $version)));
-        $this->assertFalse( $this->reflection->invokeMethod('isAcceptable', array()) );
+        $this->assertTrue( $this->reflection->invokeMethod('isAcceptable') );
     }
 
     public function testGetPath()
diff --git a/tests/Espo/Core/Utils/SystemTest.php b/tests/Espo/Core/Utils/SystemTest.php
index 6f2e525da0..9871e75864 100644
--- a/tests/Espo/Core/Utils/SystemTest.php
+++ b/tests/Espo/Core/Utils/SystemTest.php
@@ -1,4 +1,4 @@
-<?php
+<?php
 /************************************************************************
  * This file is part of EspoCRM.
  *
@@ -23,6 +23,7 @@
 namespace tests\Espo\Core\Utils;
 
 use Espo\Core\Utils\Util;
+use Espo\Core\Utils\System;
 
 class SystemTest extends \PHPUnit_Framework_TestCase
 {
@@ -86,4 +87,9 @@ class SystemTest extends \PHPUnit_Framework_TestCase
             $this->assertEquals($phpBin, $this->object->getPhpBin());
         }
     }
+
+    public function testGetPhpVersion()
+    {
+        $this->assertTrue( (bool) preg_match('/^[0-9\.]+$/', System::getPhpVersion()) );
+    }
 }
\ No newline at end of file