diff --git a/conf/layer.conf b/conf/layer.conf
index 8d0b76b..0648750 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -4,6 +4,3 @@
 BBFILE_COLLECTIONS += "ingrasys"
 BBFILE_PATTERN_ingrasys := "^${LAYERDIR}/"
 LAYERSERIES_COMPAT_ingrasys = "thud warrior"
-
-# Provide a variable that points the base of the ingrasys layer.
-INGRASYSBASE = '${@os.path.normpath("${LAYERDIR}/")}'
diff --git a/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb b/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
index 164a9e7..dd6d6ee 100644
--- a/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
+++ b/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
@@ -2,7 +2,7 @@
 DESCRIPTION = "Voltage regulator module (VRM) AVSBus control for Zaius"
 PR = "r0"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${INGRASYSBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit obmc-phosphor-systemd
 
diff --git a/meta-zaius/recipes-phosphor/chassis/vcs-control.bb b/meta-zaius/recipes-phosphor/chassis/vcs-control.bb
index f33fe0d..597dff4 100644
--- a/meta-zaius/recipes-phosphor/chassis/vcs-control.bb
+++ b/meta-zaius/recipes-phosphor/chassis/vcs-control.bb
@@ -2,7 +2,7 @@
 DESCRIPTION = "VCS voltage rail control implementation for Zaius"
 PR = "r0"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${INGRASYSBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit obmc-phosphor-systemd
 
diff --git a/meta-zaius/recipes-phosphor/configuration/zaius-yaml-config.bb b/meta-zaius/recipes-phosphor/configuration/zaius-yaml-config.bb
index 98dbc15..129938f 100644
--- a/meta-zaius/recipes-phosphor/configuration/zaius-yaml-config.bb
+++ b/meta-zaius/recipes-phosphor/configuration/zaius-yaml-config.bb
@@ -1,7 +1,7 @@
 SUMMARY = "YAML configuration for Zaius"
 PR = "r1"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${INGRASYSBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit allarch