diff --git a/common/recipes-kernel/linux/linux-intel-rt_4.9.bb b/common/recipes-kernel/linux/linux-intel-rt_4.9.bb
index ab723cca..f4aff8c8 100644
--- a/common/recipes-kernel/linux/linux-intel-rt_4.9.bb
+++ b/common/recipes-kernel/linux/linux-intel-rt_4.9.bb
@@ -18,6 +18,8 @@ SRC_URI = "git://github.com/01org/linux-intel-4.9.git;protocol=https;name=machin
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.9;destsuffix=${KMETA}"
 
 LINUX_VERSION ?= "4.9.20"
+LINUX_VERSION_EXTENSION ?= "-intel-pk-${LINUX_KERNEL_TYPE}"
+
 
 PV = "${LINUX_VERSION}+git${SRCPV}"
 
diff --git a/common/recipes-kernel/linux/linux-intel_4.9.bb b/common/recipes-kernel/linux/linux-intel_4.9.bb
index 12742f25..203bdcdc 100644
--- a/common/recipes-kernel/linux/linux-intel_4.9.bb
+++ b/common/recipes-kernel/linux/linux-intel_4.9.bb
@@ -9,6 +9,8 @@ SRC_URI = "git://github.com/01org/linux-intel-4.9.git;protocol=https;name=machin
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.9;destsuffix=${KMETA}"
 
 LINUX_VERSION ?= "4.9.20"
+LINUX_VERSION_EXTENSION ?= "-intel-pk-${LINUX_KERNEL_TYPE}"
+
 
 PV = "${LINUX_VERSION}+git${SRCPV}"