diff --git a/ports/src/noux/io_channel.h b/ports/src/noux/io_channel.h
index e473cb7a8e..c947eab449 100644
--- a/ports/src/noux/io_channel.h
+++ b/ports/src/noux/io_channel.h
@@ -70,6 +70,11 @@ namespace Noux {
 			virtual bool check_unblock(bool rd, bool wr, bool ex) const {
 				return false; }
 
+			/**
+			 * Return true if the channel is set to non-blocking mode
+			 */
+			virtual bool is_nonblocking() { return false; }
+
 			/**
 			 * Register blocker for getting waked up on an I/O channel event
 			 *
diff --git a/ports/src/noux/main.cc b/ports/src/noux/main.cc
index a4aa76e333..da0db0dcd5 100644
--- a/ports/src/noux/main.cc
+++ b/ports/src/noux/main.cc
@@ -140,8 +140,9 @@ bool Noux::Child::syscall(Noux::Session::Syscall sc)
 
 					Shared_pointer<Io_channel> io = _lookup_channel(_sysio->write_in.fd);
 
-					if (!io->check_unblock(false, true, false))
-						_block_for_io_channel(io);
+					if (!io->is_nonblocking())
+						if (!io->check_unblock(false, true, false))
+							_block_for_io_channel(io);
 
 					/*
 					 * 'io->write' is expected to update 'write_out.count'
@@ -156,8 +157,9 @@ bool Noux::Child::syscall(Noux::Session::Syscall sc)
 			{
 				Shared_pointer<Io_channel> io = _lookup_channel(_sysio->read_in.fd);
 
-				while (!io->check_unblock(true, false, false))
-					_block_for_io_channel(io);
+				if (!io->is_nonblocking())
+					while (!io->check_unblock(true, false, false))
+						_block_for_io_channel(io);
 
 				io->read(_sysio);
 				return true;