diff --git a/sfx2/source/view/classificationcontroller.cxx b/sfx2/source/view/classificationcontroller.cxx
index 788eddfdb000..523e4e0b57c7 100644
--- a/sfx2/source/view/classificationcontroller.cxx
+++ b/sfx2/source/view/classificationcontroller.cxx
@@ -56,7 +56,7 @@ class ClassificationCategoriesController : public ClassificationCategoriesContro
     DECL_LINK_TYPED(SelectHdl, ListBox&, void);
 
 public:
-    ClassificationCategoriesController(const uno::Reference<uno::XComponentContext>& rContext);
+    explicit ClassificationCategoriesController(const uno::Reference<uno::XComponentContext>& rContext);
     virtual ~ClassificationCategoriesController();
 
     // XServiceInfo
diff --git a/sfx2/source/view/classificationhelper.cxx b/sfx2/source/view/classificationhelper.cxx
index fc1d236d54b1..5e4567a631b4 100644
--- a/sfx2/source/view/classificationhelper.cxx
+++ b/sfx2/source/view/classificationhelper.cxx
@@ -324,7 +324,7 @@ public:
     std::vector<SfxClassificationCategory> m_aCategories;
     const uno::Reference<document::XDocumentProperties>& m_xDocumentProperties;
 
-    Impl(const uno::Reference<document::XDocumentProperties>& xDocumentProperties);
+    explicit Impl(const uno::Reference<document::XDocumentProperties>& xDocumentProperties);
     void parsePolicy();
     /// Synchronize m_aLabels back to the document properties.
     void pushToDocumentProperties();
diff --git a/svx/source/dialog/crashreportdlg.hxx b/svx/source/dialog/crashreportdlg.hxx
index a7f22e2fdcda..d1304a1063e4 100644
--- a/svx/source/dialog/crashreportdlg.hxx
+++ b/svx/source/dialog/crashreportdlg.hxx
@@ -17,7 +17,7 @@ class CrashReportDialog : public Dialog
 {
 public:
 
-    CrashReportDialog(vcl::Window* pParent);
+    explicit CrashReportDialog(vcl::Window* pParent);
 
     virtual ~CrashReportDialog();
 
diff --git a/svx/source/dialog/crashreportui.cxx b/svx/source/dialog/crashreportui.cxx
index d3387052aba2..eaa6a8e3b4d6 100644
--- a/svx/source/dialog/crashreportui.cxx
+++ b/svx/source/dialog/crashreportui.cxx
@@ -24,7 +24,7 @@ class CrashReportUI : public ::cppu::WeakImplHelper< css::lang::XServiceInfo
                                                    css::frame::XSynchronousDispatch > // => XDispatch!
 {
 public:
-    CrashReportUI(const css::uno::Reference< css::uno::XComponentContext >& xContext);
+    explicit CrashReportUI(const css::uno::Reference< css::uno::XComponentContext >& xContext);
     virtual ~CrashReportUI();
 
     // css.lang.XServiceInfo