diff --git a/duchain/rustducontext.h b/duchain/rustducontext.h
index 9e42a4e..fbc8f3b 100644
--- a/duchain/rustducontext.h
+++ b/duchain/rustducontext.h
@@ -1,41 +1,41 @@
 #ifndef RUSTDUCONTEXT_H
 #define RUSTDUCONTEXT_H
 
 #include <language/duchain/duchainregister.h>
 #include <language/duchain/ducontext.h>
 #include <language/duchain/topducontext.h>
 
 namespace Rust
 {
 
 using namespace KDevelop;
 
 template<class BaseContext, int IdentityT>
 class RustDUContext : public BaseContext
 {
 public:
     template<class Data>
     explicit RustDUContext(Data& data) : BaseContext(data) {
     }
 
     ///Parameters will be reached to the base-class
     template<typename... Params>
     explicit RustDUContext(Params... params) : BaseContext(params...) {
         static_cast<KDevelop::DUChainBase*>(this)->d_func_dynamic()->setClassId(this);
     }
 
-    QWidget *createNavigationWidget(KDevelop::Declaration* decl = 0, KDevelop::TopDUContext* topContext = 0,
+    QWidget *createNavigationWidget(KDevelop::Declaration* decl = nullptr, KDevelop::TopDUContext* topContext = nullptr,
                                             const QString& htmlPrefix = QString(), const QString& htmlSuffix = QString(),
                                             KDevelop::AbstractNavigationWidget::DisplayHints hints = KDevelop::AbstractNavigationWidget::NoHints) const override;
 
     enum {
         Identity = IdentityT
     };
 };
 
 using RustTopDUContext = RustDUContext<KDevelop::TopDUContext, 150>;
 using RustNormalDUContext = RustDUContext<KDevelop::DUContext, 151>;
 
 }
 
 #endif // RUSTDUCONTEXT_H