diff --git a/src/modules/mavlink/mavlink_shell.cpp b/src/modules/mavlink/mavlink_shell.cpp
index cce39a472f..4ff139d0d7 100644
--- a/src/modules/mavlink/mavlink_shell.cpp
+++ b/src/modules/mavlink/mavlink_shell.cpp
@@ -114,8 +114,6 @@ int MavlinkShell::start()
 #ifdef __PX4_NUTTX
 	sched_lock();
 #endif /* __PX4_NUTTX */
-	fflush(stdout);
-	fflush(stderr);
 
 #ifdef __PX4_POSIX
 	int remote_in_fd = dup(_shell_fds[0]);	// Input file descriptor for the remote shell