--- cvsroot/libcoro/coro.c	2011/05/30 02:32:06	1.56
+++ cvsroot/libcoro/coro.c	2011/05/30 02:46:52	1.57
@@ -88,8 +88,8 @@
 
   coro_transfer (new_coro, create_coro);
 
-#ifdef __linux && __elf
-  /* we blindly assume on any __linux with __elf we have a new enough gas with .cfi_undefined support */
+#if __linux && __amd64
+  /* we blindly assume on any __linux with __amd64 we have a new enough gas with .cfi_undefined support */
   asm (".cfi_undefined rip");
 #endif