diff --git a/core/config.mk b/core/config.mk
index 546ebb2..33705fa 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -695,6 +695,8 @@
 FINDBUGS_DIR := external/owasp/sanitizer/tools/findbugs/bin
 FINDBUGS := $(FINDBUGS_DIR)/findbugs
 
+JETIFIER := prebuilts/sdk/tools/jetifier/jetifier-standalone/bin/jetifier-standalone
+
 # Tool to merge AndroidManifest.xmls
 ANDROID_MANIFEST_MERGER_CLASSPATH := \
     prebuilts/gradle-plugin/com/android/tools/build/manifest-merger/26.0.0-beta2/manifest-merger-26.0.0-beta2.jar \