diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6c5b17ed59e1170baca1f67854211d2c127e869a..829d6b0d8b02496821ff14a0a7c869192383368a 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -49,6 +49,7 @@ static int ptrace_child(void *arg)
 	int pid = os_getpid(), ppid = getppid();
 	int sc_result;
 
+	change_sig(SIGWINCH, 0);
 	if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
 		perror("ptrace");
 		os_kill_process(pid, 0);