diff --git a/src/platform/null/time.c b/src/platform/null/time.c
index add1f2c..161c288 100644
--- a/src/platform/null/time.c
+++ b/src/platform/null/time.c
@@ -1,2 +1,2 @@
 unigi_type_time unigi_time_clock() { return 0; }
-void unigi_time_sleep(unigi_type_time) { }
+void unigi_time_sleep(unigi_type_time time) { }