diff --git a/artiq/firmware/runtime/lib.rs b/artiq/firmware/runtime/lib.rs
index c9cc36315..d62488153 100644
--- a/artiq/firmware/runtime/lib.rs
+++ b/artiq/firmware/runtime/lib.rs
@@ -176,7 +176,7 @@ pub extern fn main() -> i32 {
             panic!("out of memory");
         });
 
-        static mut LOG_BUFFER: [u8; 65536] = [0; 65536];
+        static mut LOG_BUFFER: [u8; 32768] = [0; 32768];
         logger_artiq::BufferLogger::new(&mut LOG_BUFFER[..]).register(startup);
         0
     }
diff --git a/artiq/firmware/runtime/mgmt.rs b/artiq/firmware/runtime/mgmt.rs
index 13fb808af..32fed0b2d 100644
--- a/artiq/firmware/runtime/mgmt.rs
+++ b/artiq/firmware/runtime/mgmt.rs
@@ -69,7 +69,7 @@ fn worker(mut stream: &mut TcpStream) -> io::Result<()> {
 }
 
 pub fn thread(io: Io) {
-    let listener = TcpListener::new(&io, 4096);
+    let listener = TcpListener::new(&io, 65535);
     listener.listen(1380).expect("mgmt: cannot listen");
     info!("management interface active");