diff --git a/pwnlib/tubes/tube.py b/pwnlib/tubes/tube.py
index 78c29cd5b0..d9b5dc8b57 100644
--- a/pwnlib/tubes/tube.py
+++ b/pwnlib/tubes/tube.py
@@ -216,7 +216,7 @@ def recvpred(self, pred, timeout = default):
         return data
 
     def recvn(self, numb, timeout = default):
-        """recvn(numb, timeout = default) -> str
+        """recvn(numb, timeout = default) -> bytes
 
         Receives exactly `n` bytes.