diff --git a/meta-arm/conf/machine/qemuarm64-secureboot.conf b/meta-arm/conf/machine/qemuarm64-secureboot.conf
index 7277817d..55c4cab4 100644
--- a/meta-arm/conf/machine/qemuarm64-secureboot.conf
+++ b/meta-arm/conf/machine/qemuarm64-secureboot.conf
@@ -23,6 +23,3 @@ WKS_FILE_DEPENDS = "trusted-firmware-a"
 IMAGE_BOOT_FILES = "${KERNEL_IMAGETYPE}"
 
 MACHINE_FEATURES += "optee-ftpm"
-
-PREFERRED_VERSION_optee-os ?= "3.18.%"
-