diff --git a/rust/rust.go b/rust/rust.go
index 1b999d7..77d9a90 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -118,6 +118,10 @@
 	return mod.InRamdisk()
 }
 
+func (mod *Module) VendorRamdiskVariantNeeded(android.BaseModuleContext) bool {
+	return mod.InVendorRamdisk()
+}
+
 func (mod *Module) RecoveryVariantNeeded(android.BaseModuleContext) bool {
 	return mod.InRecovery()
 }
@@ -185,6 +189,10 @@
 	return false
 }
 
+func (mod *Module) OnlyInVendorRamdisk() bool {
+	return false
+}
+
 func (mod *Module) OnlyInRecovery() bool {
 	return false
 }