diff --git a/drivers/char/hangcheck-timer.c b/drivers/char/hangcheck-timer.c
index 1aa93a7..ae76a9f 100644
--- a/drivers/char/hangcheck-timer.c
+++ b/drivers/char/hangcheck-timer.c
@@ -117,7 +117,7 @@
 __setup("hcheck_dump_tasks", hangcheck_parse_dump_tasks);
 #endif /* not MODULE */
 
-#if defined(CONFIG_X86_64) || defined(CONFIG_S390)
+#if defined(CONFIG_S390)
 # define HAVE_MONOTONIC
 # define TIMER_FREQ 1000000000ULL
 #elif defined(CONFIG_IA64)