diff --git a/module/os/windows/spl/spl-kstat.c b/module/os/windows/spl/spl-kstat.c
index b3e60d10e65e..b49c9e635a9a 100644
--- a/module/os/windows/spl/spl-kstat.c
+++ b/module/os/windows/spl/spl-kstat.c
@@ -2261,9 +2261,10 @@ int spl_kstat_write(PDEVICE_OBJECT DiskDevice, PIRP Irp,
 	return (0);
 }
 
-uint64_t
-getL2ArcAllocSize(arc_stats_t* arc_ptr) {
-    return arc_ptr->arcstat_l2_psize.value.ui64;
+void
+getL2ArcAllocSize(uint64_t* l2arc,arc_stats_t* arc_ptr)
+{
+    *l2arc = arc_ptr->arcstat_l2_psize.value.ui64;
 }
 
 // Added comments inline referring to perl arcstat.pl
diff --git a/module/os/windows/zfs/zfs_ioctl_os.c b/module/os/windows/zfs/zfs_ioctl_os.c
index 714b7240ee2f..da292bd8b3be 100644
--- a/module/os/windows/zfs/zfs_ioctl_os.c
+++ b/module/os/windows/zfs/zfs_ioctl_os.c
@@ -143,10 +143,12 @@ NTSTATUS zpool_zfs_get_metrics(PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_
     else
 	perf->zfs_volSize = getZvolSize(perf->name);
 
+    uint64_t l2arc=0;
     KSTAT_ENTER(perf_arc_ksp);
     int error = KSTAT_UPDATE(perf_arc_ksp, KSTAT_READ);
     if (!error)
-	perf->l2arc_alloc_size = getL2ArcAllocSize(perf_arc_ksp->ks_data);
+	getL2ArcAllocSize(&l2arc, perf_arc_ksp->ks_data);
+	perf->l2arc_alloc_size = l2arc;
     KSTAT_EXIT(perf_arc_ksp);
 
     Irp->IoStatus.Information = sizeof(zpool_zfs_metrics);