diff --git a/recipes-st/images/st-image-bootfs.bb b/recipes-st/images/st-image-bootfs.bb
index 10848968..560d704d 100644
--- a/recipes-st/images/st-image-bootfs.bb
+++ b/recipes-st/images/st-image-bootfs.bb
@@ -22,3 +22,5 @@ INITRD_PACKAGE ?= ""
 PACKAGE_INSTALL += " \
     ${@bb.utils.contains('MACHINE_FEATURES', 'initrd', '${INITRD_PACKAGE}', '', d)} \
 "
+
+IMAGE_FSTYPES = "ext4"
diff --git a/recipes-st/images/st-image-userfs.bb b/recipes-st/images/st-image-userfs.bb
index 55d14337..03716189 100644
--- a/recipes-st/images/st-image-userfs.bb
+++ b/recipes-st/images/st-image-userfs.bb
@@ -19,3 +19,5 @@ PACKAGE_INSTALL += " \
 PACKAGE_INSTALL += " \
     packagegroup-st-demo \
     "
+
+IMAGE_FSTYPES = "ext4"