diff --git a/libraries/databaseTools.py b/libraries/databaseTools.py
index 020018b10..d4bbe3952 100644
--- a/libraries/databaseTools.py
+++ b/libraries/databaseTools.py
@@ -2578,8 +2578,8 @@ class etpDatabase:
 
     def listAllCategories(self):
 	dbLog.log(ETP_LOGPRI_INFO,ETP_LOGLEVEL_VERBOSE,"listAllCategories: called.")
-	self.cursor.execute('SELECT categories.category FROM baseinfo,categories WHERE baseinfo.idcategory = categories.idcategory')
-	return self.fetchall2set(self.cursor.fetchall())
+	self.cursor.execute('SELECT categories.idcategory,categories.category FROM baseinfo,categories WHERE baseinfo.idcategory = categories.idcategory')
+	return self.cursor.fetchall()
 
     def listConfigProtectDirectories(self, mask = False):
 	dbLog.log(ETP_LOGPRI_INFO,ETP_LOGLEVEL_VERBOSE,"listConfigProtectDirectories: called.")