diff --git a/libsuspend/autosuspend_wakeup_count.c b/libsuspend/autosuspend_wakeup_count.c
index b038e20..a88e677 100644
--- a/libsuspend/autosuspend_wakeup_count.c
+++ b/libsuspend/autosuspend_wakeup_count.c
@@ -38,7 +38,7 @@
 static sem_t suspend_lockout;
 static const char *sleep_state = "mem";
 
-static void *suspend_thread_func(void *arg)
+static void *suspend_thread_func(void *arg __attribute__((unused)))
 {
     char buf[80];
     char wakeup_count[20];