diff --git a/module/spl/spl-kstat.c b/module/spl/spl-kstat.c
index 70c0c98f8..405ece0ad 100644
--- a/module/spl/spl-kstat.c
+++ b/module/spl/spl-kstat.c
@@ -327,7 +327,7 @@ restart:
 	return (-rc);
 }
 
-int
+static int
 kstat_default_update(kstat_t *ksp, int rw)
 {
 	ASSERT(ksp != NULL);