diff --git a/java/config/makevars.go b/java/config/makevars.go
index 6b49592..2735242 100644
--- a/java/config/makevars.go
+++ b/java/config/makevars.go
@@ -43,6 +43,8 @@
 	ctx.Strict("JAR_ARGS", "${JarArgsCmd}")
 	ctx.Strict("JAVADOC", "${JavadocCmd}")
 	ctx.Strict("COMMON_JDK_FLAGS", "${CommonJdkFlags}")
+	ctx.Strict("DX", "${DxCmd}")
+	ctx.Strict("DX_COMMAND", "${DxCmd} -JXms16M -JXmx2048M")
 
 	if ctx.Config().IsEnvTrue("RUN_ERROR_PRONE") {
 		ctx.Strict("TARGET_JAVAC", "${ErrorProneCmd}")