diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index 0713914b25b4..7a91d300c549 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -446,6 +446,7 @@ CONFIG_BLK_DEV_RAM_SIZE=32768
 CONFIG_VIRTIO_BLK=y
 CONFIG_BLK_DEV_RBD=m
 CONFIG_BLK_DEV_NVME=m
+CONFIG_BLK_DEV_NULL_BLK=m
 CONFIG_ENCLOSURE_SERVICES=m
 CONFIG_GENWQE=m
 CONFIG_RAID_ATTRS=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index c064e0cacc98..3bb2aa8ecd13 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -436,6 +436,7 @@ CONFIG_BLK_DEV_RAM_SIZE=32768
 CONFIG_VIRTIO_BLK=y
 CONFIG_BLK_DEV_RBD=m
 CONFIG_BLK_DEV_NVME=m
+CONFIG_BLK_DEV_NULL_BLK=m
 CONFIG_ENCLOSURE_SERVICES=m
 CONFIG_GENWQE=m
 CONFIG_RAID_ATTRS=m