diff --git a/core/main.mk b/core/main.mk
index 4e79ca146dd1a16fe459e41028d365af0989a296..386c0c945284222d47de099d73e621d1f5b31f0f 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -391,6 +391,7 @@ subdirs += \
 	sdk/androidprefs \
 	sdk/apkbuilder \
 	sdk/jarutils \
+	sdk/layoutlib_api \
 	sdk/layoutlib_utils \
 	sdk/ninepatch \
 	sdk/sdkstats \