diff --git a/src/NetMQ/Core/Mailbox.cs b/src/NetMQ/Core/Mailbox.cs
index e958ec8d..ac922650 100644
--- a/src/NetMQ/Core/Mailbox.cs
+++ b/src/NetMQ/Core/Mailbox.cs
@@ -213,7 +213,7 @@ public bool TryRecv(int timeout, out Command command)
                     m_active = false;
                     m_signaler.Recv();
                 }
-                catch
+                catch (SocketException)
                 {
                     m_active = true;
                     command = default(Command);