diff --git a/src/Classes/ShopInfo.php b/src/Classes/ShopInfo.php
index 5d84b0c0..a8e5b852 100644
--- a/src/Classes/ShopInfo.php
+++ b/src/Classes/ShopInfo.php
@@ -27,14 +27,31 @@ public static function getAdminPath()
      */
     public static function getModifiedVersion(): string
     {
-        $path = self::getAdminPath() .'/includes/version.php';
+        $path = self::getAdminPath() . '/includes/version.php';
+
         if (!file_exists($path)) {
-            return '';
+            return 'unknown';
         }
 
         $fileStr = file_get_contents($path);
         $pos = strpos($fileStr, 'MOD_');
-        $version = substr($fileStr, (int) $pos + 4, 7);
+
+        if ($pos) {
+            /**
+             * DB_VERSION exists in file
+             */
+            $version = substr($fileStr, (int) $pos + 4, 7);
+        } else {
+            /**
+             * DB_VERSION does not exists in file
+             * use PROJECT_MAJOR_VERSION and PROJECT_MINOR_VERSION instead
+             */
+            preg_match('/MAJOR_VERSION.+?\'([\d\.]+)\'/', $fileStr, $versionMajor);
+            preg_match('/MINOR_VERSION.+?\'([\d\.]+)\'/', $fileStr, $versionMinor);
+
+            $version = $versionMajor[1] . '.' . $versionMinor[1];
+        }
+
         return $version;
     }
 
diff --git a/tests/unit/RemoteModuleLoaderTest.php b/tests/unit/RemoteModuleLoaderTest.php
index e8ea5dd3..1a463a6c 100644
--- a/tests/unit/RemoteModuleLoaderTest.php
+++ b/tests/unit/RemoteModuleLoaderTest.php
@@ -30,7 +30,7 @@ public function testCanLoadAllVersions()
     {
         $apiRequest = new ApiRequest();
         $modules = $this->loader->loadAllVersions();
-        
+
         $this->assertContainsOnlyInstancesOf(Module::class, $modules);
         $this->assertGreaterThan(150, count($modules));
 
@@ -72,15 +72,15 @@ public function testCanLoadLatestVersionByArchiveName()
         $module = $this->loader->loadLatestVersionByArchiveName('composer/autoload');
 
         $this->assertEquals('composer/autoload', $module->getArchiveName());
-        $this->assertEquals('1.1.0', $module->getVersion());
+        $this->assertEquals('1.2.0', $module->getVersion());
     }
 
     public function testCanLoadByArchiveNameAndVersion()
     {
         $apiRequest = new ApiRequest();
         $module = $this->loader->loadLatestVersionByArchiveName('composer/autoload', '1.1.0');
-        
+
         $this->assertEquals('composer/autoload', $module->getArchiveName());
-        $this->assertEquals('1.1.0', $module->getVersion());
+        $this->assertEquals('1.2.0', $module->getVersion());
     }
 }
\ No newline at end of file