diff --git a/plugins/clang/codegen/adaptsignatureaction.h b/plugins/clang/codegen/adaptsignatureaction.h
index 1d2d386801..725949fb36 100644
--- a/plugins/clang/codegen/adaptsignatureaction.h
+++ b/plugins/clang/codegen/adaptsignatureaction.h
@@ -1,68 +1,70 @@
 /*
    Copyright 2009 David Nolden <david.nolden.kdevelop@art-master.de>
    Copyright 2014 Kevin Funk <kfunk@kde.org>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License version 2 as published by the Free Software Foundation.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
  */
 
 #ifndef ADAPTSIGNATUREACTION_H
 #define ADAPTSIGNATUREACTION_H
 
 #include <interfaces/iassistant.h>
 #include <language/duchain/declaration.h>
 #include <language/duchain/topducontext.h>
 
 namespace KDevelop {
 class RenameAction;
 }
 
 using ParameterItem = QPair<KDevelop::IndexedType, QString>;
 struct Signature
 {
-    Signature(){};
+    Signature()
+        : isConst(false)
+        {}
     QVector<ParameterItem> parameters;
     QList<QString> defaultParams;
     KDevelop::IndexedType returnType;
     bool isConst;
 };
 
 class AdaptSignatureAction
     : public KDevelop::IAssistantAction
 {
     Q_OBJECT
 
 public:
     AdaptSignatureAction(const KDevelop::DeclarationId& definitionId,
                          const KDevelop::ReferencedTopDUContext& definitionContext,
                          const Signature& oldSignature,
                          const Signature& newSignature,
                          bool editingDefinition,
                          const QList<KDevelop::RenameAction*>& renameActions);
     ~AdaptSignatureAction() override;
 
     QString description() const override;
     QString toolTip() const override;
     void execute() override;
 
 private:
     KDevelop::DeclarationId m_otherSideId;
     KDevelop::ReferencedTopDUContext m_otherSideTopContext;
     Signature m_oldSignature;
     Signature m_newSignature;
     bool m_editingDefinition;
     const QList<KDevelop::RenameAction*> m_renameActions;
 };
 
 #endif // ADAPTSIGNATUREACTION_H