diff --git a/qemu/tests/cfg/virtio_fs_share_data_hugepage.cfg b/qemu/tests/cfg/virtio_fs_share_data_hugepage.cfg
index 3771929447..f1ceca91c1 100644
--- a/qemu/tests/cfg/virtio_fs_share_data_hugepage.cfg
+++ b/qemu/tests/cfg/virtio_fs_share_data_hugepage.cfg
@@ -65,11 +65,11 @@
         - with_cache:
             variants:
                 - auto:
-                    fs_binary_extra_options += ",cache=auto"
+                    fs_binary_extra_options += " --cache=auto"
                 - always:
-                    fs_binary_extra_options += ",cache=always"
-                - none:
-                    fs_binary_extra_options += ",cache=none"
+                    fs_binary_extra_options += " --cache=always"
+                - never:
+                    fs_binary_extra_options += " --cache=never"
     variants:
         - basic_test:
             cmd_dd = 'dd if=/dev/urandom of=%s bs=1M count=2048 oflag=direct'