diff --git a/java/config/makevars.go b/java/config/makevars.go
index 5210f20..27c7daa 100644
--- a/java/config/makevars.go
+++ b/java/config/makevars.go
@@ -77,4 +77,6 @@
 
 	ctx.Strict("JACOCO_CLI_JAR", "${JacocoCLIJar}")
 	ctx.Strict("DEFAULT_JACOCO_EXCLUDE_FILTER", strings.Join(DefaultJacocoExcludeFilter, ","))
+
+	ctx.Strict("EXTRACT_JAR_PACKAGES", "${ExtractJarPackagesCmd}")
 }