diff --git a/src/main.rs b/src/main.rs
index 9968d18..e003664 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -136,9 +136,11 @@ fn main() -> ! {
                             net::net::clear_pending(cs);
                         });
                         let bytes = net::net::eth_recv(&mut ETH_DATA_BUFFER);
-                        info!("Ts: {:?}", sys_timer::now());
-                        debug!("Number of bytes recv: {:?}", bytes);
-                        (laser, thermostat, should_reset, device_settings) = net::cmd_handler::execute_cmd(&mut ETH_DATA_BUFFER, bytes, laser, thermostat, device_settings);
+                        if bytes != 0 {
+                            info!("Ts: {:?}", sys_timer::now());
+                            debug!("Number of bytes recv: {:?}", bytes);
+                            (laser, thermostat, should_reset, device_settings) = net::cmd_handler::execute_cmd(&mut ETH_DATA_BUFFER, bytes, laser, thermostat, device_settings);
+                        }
                     }
                 }
                 if has_temp_reading {