diff --git a/kernel/kernel/Networking/TCPSocket.cpp b/kernel/kernel/Networking/TCPSocket.cpp
index af8a03aa..34dce5c6 100644
--- a/kernel/kernel/Networking/TCPSocket.cpp
+++ b/kernel/kernel/Networking/TCPSocket.cpp
@@ -127,7 +127,8 @@ namespace Kernel
 
 		LockGuard _(m_mutex);
 
-		ASSERT(!m_connection_info.has_value());
+		if (m_connection_info.has_value())
+			return BAN::Error::from_errno(EISCONN);
 
 		switch (m_state)
 		{