1 files changed, 2 insertions, 2 deletions
diff --git a/gc.c b/gc.c
index 1dbd86dedb..f60d950852 100644
--- a/gc.c
+++ b/gc.c
@@ -949,7 +949,7 @@ rb_gc()
     alloca(0);
 # define STACK_END (&stack_end)
 #else
-# if defined(__GNUC__) && defined(__i386__)
+# if defined(__GNUC__) && defined(USE_BUILTIN_FRAME_ADDRESS)
     VALUE *stack_end = __builtin_frame_address(0);
 # else
     VALUE *stack_end = alloca(1);
@@ -1029,7 +1029,7 @@ Init_stack(addr)
 #if defined(__human68k__)
     extern void *_SEND;
     rb_gc_stack_start = _SEND;
-#elif defined(__GNUC__) && defined(__i386__)
+#elif defined(__GNUC__) && defined(USE_BUILTIN_FRAME_ADDRESS)
     rb_gc_stack_start = __builtin_frame_address(2);
 #else
     VALUE start;