diff --git a/support/testing/tests/fs/test_cpio.py b/support/testing/tests/fs/test_cpio.py
index 9a529f1edd..8c0d357994 100644
--- a/support/testing/tests/fs/test_cpio.py
+++ b/support/testing/tests/fs/test_cpio.py
@@ -37,11 +37,14 @@ class TestCpioDracutBase(infra.basetest.BRTest):
         BR2_TOOLCHAIN_EXTERNAL=y
         BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
         BR2_INIT_BUSYBOX=y
+        BR2_PACKAGE_CRAMFS=y
         BR2_PACKAGE_PV=y
         BR2_TARGET_ROOTFS_CPIO=y
         BR2_TARGET_ROOTFS_CPIO_DRACUT=y
+        BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES="{}"
         # BR2_TARGET_ROOTFS_TAR is not set
-        """
+        """.format(" ".join(["fs/cpio/dracut.conf",
+                             "support/testing/tests/fs/test_cpio/dracut-cramfs.conf"]))
 
     def check_dracut(self):
         out = subprocess.check_output(["cpio", "--list"],
@@ -52,6 +55,9 @@ class TestCpioDracutBase(infra.basetest.BRTest):
                                       universal_newlines=True)
         # pv should *not* be included in cpio image
         self.assertEqual(out.find("bin/pv"), -1)
+        # libz should be, because of cramfs
+        self.assertNotEqual(out.find("usr/bin/mkcramfs"), -1)
+        self.assertNotEqual(out.find("usr/lib/libz.so"), -1)
 
         exit_code = boot_img(self.emulator,
                              self.builddir)
diff --git a/support/testing/tests/fs/test_cpio/dracut-cramfs.conf b/support/testing/tests/fs/test_cpio/dracut-cramfs.conf
new file mode 100644
index 0000000000..69e49239fc
--- /dev/null
+++ b/support/testing/tests/fs/test_cpio/dracut-cramfs.conf
@@ -0,0 +1,7 @@
+install_items+="
+/usr/bin/mkcramfs
+"
+
+add_dracutmodules+="
+cramfs
+"