diff --git a/core/build_id.mk b/core/build_id.mk
index 8858393..40bb35d 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -13,9 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+#
+# Defines branch-specific values.
+#
+
 # BUILD_ID is usually used to specify the branch name
 # (like "MAIN") or a branch name and a release candidate
-# (like "CRB01").  It must be a single word, and is
+# (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
+#
+BUILD_ID := MASTER
 
-export BUILD_ID=KRS36B
+# DISPLAY_BUILD_NUMBER should only be set for development branches,
+# If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
+# a more descriptive BUILD_ID_DISPLAY, otherwise BUILD_ID_DISPLAY
+# is the same as BUILD_ID
+DISPLAY_BUILD_NUMBER := true
diff --git a/target/product/core.mk b/target/product/core.mk
index dcba51f..0776892 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -31,6 +31,3 @@
     VpnDialogs
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_base.mk)
-
-# Override the PRODUCT_BOOT_JARS set in core_minimal.mk
-PRODUCT_BOOT_JARS := core:conscrypt:okhttp:core-junit:bouncycastle:ext:framework:framework2:telephony-common:voip-common:mms-common:android.policy:services:apache-xml:webviewchromium
diff --git a/target/product/core_base.mk b/target/product/core_base.mk
index ecc59c7..cde2b85 100644
--- a/target/product/core_base.mk
+++ b/target/product/core_base.mk
@@ -67,3 +67,5 @@
     voip-common
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_minimal.mk)
+# Override the PRODUCT_BOOT_JARS set in core_minimal.mk
+PRODUCT_BOOT_JARS := core:conscrypt:okhttp:core-junit:bouncycastle:ext:framework:framework2:telephony-common:voip-common:mms-common:android.policy:services:apache-xml:webviewchromium