diff --git a/signal.c b/signal.c
index e785b6fb96..3f104b1854 100644
--- a/signal.c
+++ b/signal.c
@@ -1047,10 +1047,14 @@ Init_signal(void)
 #endif
 
 #ifdef SIGBUS
+# ifndef RUBY_GC_STRESS
     install_sighandler(SIGBUS, sigbus);
+# endif
 #endif
 #ifdef SIGSEGV
+# ifndef RUBY_GC_STRESS
     install_sighandler(SIGSEGV, sigsegv);
+# endif
 #endif
 #ifdef SIGPIPE
     install_sighandler(SIGPIPE, sigpipe);