diff --git a/android/module.go b/android/module.go
index 5d1a609..70b602b 100644
--- a/android/module.go
+++ b/android/module.go
@@ -417,6 +417,7 @@
 	} `android:"arch_variant"`
 
 	// Set by TargetMutator
+	CompileOS           OsType   `blueprint:"mutated"`
 	CompileTarget       Target   `blueprint:"mutated"`
 	CompileMultiTargets []Target `blueprint:"mutated"`
 	CompilePrimary      bool     `blueprint:"mutated"`
@@ -719,12 +720,6 @@
 	}
 }
 
-func (m *ModuleBase) SetTarget(target Target, multiTargets []Target, primary bool) {
-	m.commonProperties.CompileTarget = target
-	m.commonProperties.CompileMultiTargets = multiTargets
-	m.commonProperties.CompilePrimary = primary
-}
-
 func (m *ModuleBase) Target() Target {
 	return m.commonProperties.CompileTarget
 }