diff --git a/src/ia64/Gget_save_loc-ia64.c b/src/ia64/Gget_save_loc-ia64.c
index 12079d68..1b61e2c5 100644
--- a/src/ia64/Gget_save_loc-ia64.c
+++ b/src/ia64/Gget_save_loc-ia64.c
@@ -86,7 +86,7 @@ unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
 		return ret;
 	    }
 #if !defined(UNW_LOCAL_ONLY) || defined(__linux)
-	  else if (c->sigcontext_addr)
+	  else if (c->last_abi_marker == ABI_MARKER_LINUX_SIGTRAMP)
 	    /* NaT bit is saved in a sigcontext.  */
 	    loc = IA64_LOC_ADDR (c->sigcontext_addr + LINUX_SC_NAT_OFF, 0);
 #endif