diff --git a/runtime/oti/xhelpers.m4 b/runtime/oti/xhelpers.m4
index 9d9fe46aba..793bb06901 100644
--- a/runtime/oti/xhelpers.m4
+++ b/runtime/oti/xhelpers.m4
@@ -93,7 +93,6 @@ define({SHORT_JMP},{short})
 
 define({FILE_START},{
 	.intel_syntax noprefix
-	.arch pentium4
 	.text
 })