1 files changed, 4 insertions, 4 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index fd796fddf7..7aef27337e 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -3979,10 +3979,10 @@ system and gives an overview of their function and contents.
       statements add specific configurations to targeted machine types::
 
          KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/taskstats.scc"
-         KERNEL_FEATURES:append = "${KERNEL_EXTRA_FEATURES}"
-         KERNEL_FEATURES:append:qemuall = "cfg/virtio.scc"
+         KERNEL_FEATURES:append = " ${KERNEL_EXTRA_FEATURES}"
+         KERNEL_FEATURES:append:qemuall = " cfg/virtio.scc"
          KERNEL_FEATURES:append:qemux86 = " cfg/sound.scc cfg/paravirt_kvm.scc"
-         KERNEL_FEATURES:append:qemux86-64 = "cfg/sound.scc"
+         KERNEL_FEATURES:append:qemux86-64 = " cfg/sound.scc"
 
    :term:`KERNEL_FIT_LINK_NAME`
       The link name of the kernel flattened image tree (FIT) image. This
@@ -4170,7 +4170,7 @@ system and gives an overview of their function and contents.
          SRCREV_machine:core2-32-intel-common = "43b9eced9ba8a57add36af07736344dcc383f711"
          KMACHINE:core2-32-intel-common = "intel-core2-32"
          KBRANCH:core2-32-intel-common = "standard/base"
-         KERNEL_FEATURES:append:core2-32-intel-common = "${KERNEL_FEATURES_INTEL_COMMON}"
+         KERNEL_FEATURES:append:core2-32-intel-common = " ${KERNEL_FEATURES_INTEL_COMMON}"
 
       The :term:`KMACHINE` statement says
       that the kernel understands the machine name as "intel-core2-32".