diff --git a/poky/meta-poky/conf/distro/include/poky-distro-alt-test-config.inc b/poky/meta-poky/conf/distro/include/poky-distro-alt-test-config.inc
index 0b0412e..273ebfd 100644
--- a/poky/meta-poky/conf/distro/include/poky-distro-alt-test-config.inc
+++ b/poky/meta-poky/conf/distro/include/poky-distro-alt-test-config.inc
@@ -2,7 +2,7 @@
 DISTRO_FEATURES_append = " pam"
 
 # Use the LTSI Kernel
-PREFERRED_VERSION_linux-yocto ?= "5.4%"
+PREFERRED_VERSION_linux-yocto = "5.4%"
 
 # Ensure the kernel nfs server is enabled
 KERNEL_FEATURES_append_pn-linux-yocto = " features/nfsd/nfsd-enable.scc"