diff --git a/java/droiddoc.go b/java/droiddoc.go
index ae810e1..6de2ddf 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -655,6 +655,7 @@
 				deps.classpath = append(deps.classpath, dep.SdkImplementationJars(ctx, j.sdkVersion())...)
 			case Dependency:
 				deps.classpath = append(deps.classpath, dep.HeaderJars()...)
+				deps.aidlIncludeDirs = append(deps.aidlIncludeDirs, dep.AidlIncludeDirs()...)
 			case android.SourceFileProducer:
 				checkProducesJars(ctx, dep)
 				deps.classpath = append(deps.classpath, dep.Srcs()...)