diff --git a/libsolidity/ast/AST.h b/libsolidity/ast/AST.h
index 60cbc7dce..a06428f33 100644
--- a/libsolidity/ast/AST.h
+++ b/libsolidity/ast/AST.h
@@ -429,7 +429,6 @@ private:
 	std::vector<ASTPointer<ASTNode>> m_subNodes;
 	ContractKind m_contractKind;
 
-	std::vector<ContractDefinition const*> m_linearizedBaseContracts;
 	mutable std::unique_ptr<std::vector<std::pair<FixedHash<4>, FunctionTypePointer>>> m_interfaceFunctionList;
 	mutable std::unique_ptr<std::vector<EventDefinition const*>> m_interfaceEvents;
 	mutable std::unique_ptr<std::vector<Declaration const*>> m_inheritableMembers;