diff --git a/src/Mod/Import/App/ExportOCAF.cpp b/src/Mod/Import/App/ExportOCAF.cpp
index 5d8a91d00f..cf9cd6327e 100644
--- a/src/Mod/Import/App/ExportOCAF.cpp
+++ b/src/Mod/Import/App/ExportOCAF.cpp
@@ -70,7 +70,6 @@ using namespace Import;
 ExportOCAF::ExportOCAF(Handle(TDocStd_Document) h, bool explicitPlacement)
     : pDoc(h)
     , keepExplicitPlacement(explicitPlacement)
-    , filterBaseFeature(true)
 {
     aShapeTool = XCAFDoc_DocumentTool::ShapeTool(pDoc->Main());
     aColorTool = XCAFDoc_DocumentTool::ColorTool(pDoc->Main());
diff --git a/src/Mod/Import/App/ExportOCAF.h b/src/Mod/Import/App/ExportOCAF.h
index 8129e39e63..5f7a5a71f0 100644
--- a/src/Mod/Import/App/ExportOCAF.h
+++ b/src/Mod/Import/App/ExportOCAF.h
@@ -92,7 +92,7 @@ private:
     Handle(XCAFDoc_ColorTool) aColorTool;
     TDF_Label rootLabel;
     bool keepExplicitPlacement;
-    bool filterBaseFeature;
+    bool filterBaseFeature{true};
 };
 
 class ImportExport ExportOCAFCmd : public ExportOCAF
diff --git a/src/Mod/Import/App/ImportOCAF.cpp b/src/Mod/Import/App/ImportOCAF.cpp
index dbeda28c26..ce4f8fb183 100644
--- a/src/Mod/Import/App/ImportOCAF.cpp
+++ b/src/Mod/Import/App/ImportOCAF.cpp
@@ -84,7 +84,7 @@ static inline App::Color convertColor(const Quantity_ColorRGBA &c)
 #define OCAF_KEEP_PLACEMENT
 
 ImportOCAF::ImportOCAF(Handle(TDocStd_Document) h, App::Document* d, const std::string& name)
-    : pDoc(h), doc(d), merge(true), default_name(name)
+    : pDoc(h), doc(d), default_name(name)
 {
     aShapeTool = XCAFDoc_DocumentTool::ShapeTool (pDoc->Main());
     aColorTool = XCAFDoc_DocumentTool::ColorTool(pDoc->Main());
diff --git a/src/Mod/Import/App/ImportOCAF.h b/src/Mod/Import/App/ImportOCAF.h
index da0c21a081..65549e32a7 100644
--- a/src/Mod/Import/App/ImportOCAF.h
+++ b/src/Mod/Import/App/ImportOCAF.h
@@ -75,7 +75,7 @@ private:
     App::Document* doc;
     Handle(XCAFDoc_ShapeTool) aShapeTool;
     Handle(XCAFDoc_ColorTool) aColorTool;
-    bool merge;
+    bool merge{true};
     std::string default_name;
     std::set<int> myRefShapes;
     static const int HashUpper = INT_MAX;
diff --git a/src/Mod/Import/App/ImportOCAF2.cpp b/src/Mod/Import/App/ImportOCAF2.cpp
index d17ca5ce76..5156c2e904 100644
--- a/src/Mod/Import/App/ImportOCAF2.cpp
+++ b/src/Mod/Import/App/ImportOCAF2.cpp
@@ -172,7 +172,7 @@ ImportOCAFOptions::ImportOCAFOptions()
 }
 
 ImportOCAF2::ImportOCAF2(Handle(TDocStd_Document) h, App::Document* d, const std::string& name)
-    : pDoc(h), pDocument(d), default_name(name), sequencer(nullptr)
+    : pDoc(h), pDocument(d), default_name(name)
 {
     aShapeTool = XCAFDoc_DocumentTool::ShapeTool (pDoc->Main());
     aColorTool = XCAFDoc_DocumentTool::ColorTool(pDoc->Main());
diff --git a/src/Mod/Import/App/ImportOCAF2.h b/src/Mod/Import/App/ImportOCAF2.h
index e19b921971..ef438b583d 100644
--- a/src/Mod/Import/App/ImportOCAF2.h
+++ b/src/Mod/Import/App/ImportOCAF2.h
@@ -187,7 +187,7 @@ private:
     std::unordered_map<TDF_Label, std::string, LabelHasher> myNames;
     std::unordered_map<App::DocumentObject*, App::PropertyPlacement*> myCollapsedObjects;
 
-    Base::SequencerLauncher *sequencer;
+    Base::SequencerLauncher *sequencer{nullptr};
 };
 
 struct ImportExport ExportOCAFOptions