diff --git a/deapi/client.py b/deapi/client.py
index afbd617..4460d8b 100644
--- a/deapi/client.py
+++ b/deapi/client.py
@@ -321,6 +321,7 @@ def list_properties(self, options=None, search=None):
     def list_registers(self, options=None, search=None):
         """
         Get a list of register names from the current camera on DE-Server
+        for each register, it contains name of the register, address, RO or not, value of the register
 
         Parameters
         ----------