diff --git a/android/module.go b/android/module.go
index 83f5494..cfb32c1 100644
--- a/android/module.go
+++ b/android/module.go
@@ -2757,6 +2757,7 @@
 // Modules can implement HostToolProvider and return a valid OptionalPath from HostToolPath() to
 // specify that they can be used as a tool by a genrule module.
 type HostToolProvider interface {
+	Module
 	// HostToolPath returns the path to the host tool for the module if it is one, or an invalid
 	// OptionalPath.
 	HostToolPath() OptionalPath