diff --git a/conf/machine/freedom-u540.conf b/conf/machine/freedom-u540.conf
index 4a53731..2c531d3 100644
--- a/conf/machine/freedom-u540.conf
+++ b/conf/machine/freedom-u540.conf
@@ -31,7 +31,7 @@ MACHINE_EXTRA_RRECOMMENDS += " kernel-modules"
 
 RISCV_BBL_PAYLOAD ?= "${KERNEL_IMAGETYPE}-${MACHINE}.bin"
 
-IMAGE_FSTYPES_append = " wic.gz"
+IMAGE_FSTYPES_append = " wic.gz ext4"
 
 # Do not update fstab file when using wic images
 WIC_CREATE_EXTRA_ARGS ?= "--no-fstab-update"
diff --git a/conf/machine/qemuriscv64.conf b/conf/machine/qemuriscv64.conf
index 779dc5e..e901b8f 100644
--- a/conf/machine/qemuriscv64.conf
+++ b/conf/machine/qemuriscv64.conf
@@ -16,6 +16,8 @@ GDBVERSION = "riscv"
 
 SERIAL_CONSOLES = "115200;ttyS0 115200;hvc0"
 
+IMAGE_FSTYPES_append = " ext4"
+
 MACHINE_EXTRA_RRECOMMENDS += " kernel-modules"
 EXTRA_IMAGEDEPENDS += "riscv-pk"