diff --git a/sys/kern/subr_pcpu.c b/sys/kern/subr_pcpu.c
index f28ad61988e..c63a9710a62 100644
--- a/sys/kern/subr_pcpu.c
+++ b/sys/kern/subr_pcpu.c
@@ -125,7 +125,7 @@ dpcpu_startup(void *dummy __unused)
 
 	df = malloc(sizeof(*df), M_PCPU, M_WAITOK | M_ZERO);
 	df->df_start = (uintptr_t)&DPCPU_NAME(modspace);
-	df->df_len = DPCPU_MODSIZE;
+	df->df_len = DPCPU_MODMIN;
 	TAILQ_INSERT_HEAD(&dpcpu_head, df, df_link);
 	sx_init(&dpcpu_lock, "dpcpu alloc lock");
 }
diff --git a/sys/net/vnet.c b/sys/net/vnet.c
index 8013f5ed594..fb0db347b32 100644
--- a/sys/net/vnet.c
+++ b/sys/net/vnet.c
@@ -348,7 +348,7 @@ vnet_data_startup(void *dummy __unused)
 
 	df = malloc(sizeof(*df), M_VNET_DATA_FREE, M_WAITOK | M_ZERO);
 	df->vnd_start = (uintptr_t)&VNET_NAME(modspace);
-	df->vnd_len = VNET_MODSIZE;
+	df->vnd_len = VNET_MODMIN;
 	TAILQ_INSERT_HEAD(&vnet_data_free_head, df, vnd_link);
 	sx_init(&vnet_data_free_lock, "vnet_data alloc lock");
 }