diff --git a/inenvmon/inenvmon_collector.py b/inenvmon/inenvmon_collector.py
index 4cc2329..df3b0a5 100755
--- a/inenvmon/inenvmon_collector.py
+++ b/inenvmon/inenvmon_collector.py
@@ -16,12 +16,15 @@ DB_TABLE = "envdata0" # name of the database table (mqtt topic is fitting here)
 API_PORT = 8080
 API_SECRET = "itsasecret" # set to same value as in the api
 
-def write_db(sql, vals1): # function for writing to the database
+def write_db(sql, vals=None): # function for writing to the database
     dbconn = sql3db.connect(DB)
     cursor = dbconn.cursor()
 
     try:
-        cursor.execute(sql, vals)
+        if vals is not None:
+            cursor.execute(sql, vals)
+        else:
+            cursor.execute(sql)
     except sql3db.Error as e:
         print(e)
         return False