diff --git a/workflow/engine/classes/class.Installer.php b/workflow/engine/classes/class.Installer.php
index 57aff08ed..22bf1469b 100755
--- a/workflow/engine/classes/class.Installer.php
+++ b/workflow/engine/classes/class.Installer.php
@@ -86,7 +86,15 @@ class Installer
      */
     public function isset_site($name = "workflow")
     {
-        return file_exists(PATH_DATA . "sites/" . $name);
+        $pathSites = PATH_DATA . 'sites/'. '*';
+        $directories = glob($pathSites, GLOB_ONLYDIR);
+        foreach ($directories as $directory){
+            $site = basename($directory);
+            if(strtolower($site) === strtolower($name)){
+                return true;
+            }
+        }
+        return false;
     }
 
     /**
diff --git a/workflow/engine/classes/class.wsTools.php b/workflow/engine/classes/class.wsTools.php
index b1e0bee53..fff1c59cf 100755
--- a/workflow/engine/classes/class.wsTools.php
+++ b/workflow/engine/classes/class.wsTools.php
@@ -1563,7 +1563,7 @@ class workspaceTools
             }
             $workspace = new workspaceTools($workspaceName);
 
-            if ($workspace->workspaceExists()) {
+            if (Installer::isset_site($workspaceName)) {
                 if ($overwrite) {
                     if ($workspace->dbInfo['DB_NAME'] == $workspace->dbInfo['DB_RBAC_NAME']) {
                         $newDatabases = 1;