1 files changed, 0 insertions, 1 deletions
diff --git a/thread.c b/thread.c
index 4063fd8dba..11c87be183 100644
--- a/thread.c
+++ b/thread.c
@@ -1387,7 +1387,6 @@ ruby_thread_stack_overflow(rb_thread_t *th)
 {
     th->raised_flag = 0;
 #ifdef USE_SIGALTSTACK
-    th->raised_flag = 0;
     rb_exc_raise(sysstack_error);
 #else
     th->errinfo = sysstack_error;