diff --git a/core/ninja_config.mk b/core/ninja_config.mk
index e436b2c..2b5ceee 100644
--- a/core/ninja_config.mk
+++ b/core/ninja_config.mk
@@ -25,6 +25,7 @@
 	cts \
 	custom_images \
 	dicttool_aosp \
+	docs \
 	eng \
 	oem_image \
 	online-system-api-sdk-docs \