diff --git a/scripts/includes/GLPIAPI.py b/scripts/includes/GLPIAPI.py
index 6876610..e508ef7 100644
--- a/scripts/includes/GLPIAPI.py
+++ b/scripts/includes/GLPIAPI.py
@@ -59,8 +59,8 @@ class GLPIAPI:
                 deviceID = list(search["data"].keys())
                 return deviceID, search["data"], search["totalcount"]
             else:
-                return None, None, 0
-        return None, None, 0
+                return "", "", 0
+        return "", "", 0
         
     def GetUser(self, username=None, email=None):
         
@@ -81,7 +81,7 @@ class GLPIAPI:
                 userID = list(search["data"].keys())
                 return userID, search["data"], search["totalcount"]
             else:
-                return None, None, 0
+                return "", "", 0
             
     def UpdateInventory(self, inventory):
         headers = {