diff --git a/monkey/infection_monkey/config.py b/monkey/infection_monkey/config.py
index 6b01761d1..f3936fe19 100644
--- a/monkey/infection_monkey/config.py
+++ b/monkey/infection_monkey/config.py
@@ -74,7 +74,7 @@ class Configuration(object):
 
             val_type = type(value)
 
-            if val_type is types.FunctionType or val_type is types.MethodType:
+            if isinstance(val_type, types.FunctionType) or isinstance(val_type, types.MethodType):
                 continue
 
             if val_type in (type, ABCMeta):