diff --git a/src/wrpc/base.py b/src/wrpc/base.py
index 1f7a2f8..b2a660e 100644
--- a/src/wrpc/base.py
+++ b/src/wrpc/base.py
@@ -42,14 +42,10 @@ RPC_ERROR_CODE_INTERNAL = -32603
 
 
 def serialize(data):
-    if data is None:
-        return None
     return msgpack.dumps(data)
 
 
 def deserialize(data):
-    if data is None:
-        return None
     return msgpack.unpackb(data)