diff --git a/src/common/tarstrm.cpp b/src/common/tarstrm.cpp
index f26ab00422..398d7fffeb 100644
--- a/src/common/tarstrm.cpp
+++ b/src/common/tarstrm.cpp
@@ -414,7 +414,8 @@ wxTarEntry::~wxTarEntry()
 }
 
 wxTarEntry::wxTarEntry(const wxTarEntry& e)
-  : m_Name(e.m_Name),
+  : wxArchiveEntry(),
+    m_Name(e.m_Name),
     m_Mode(e.m_Mode),
     m_IsModeSet(e.m_IsModeSet),
     m_UserId(e.m_UserId),
diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index 20a2aa22b9..e2a27b4aca 100644
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -1347,6 +1347,7 @@ wxMask::wxMask()
 
 // Copy constructor
 wxMask::wxMask(const wxMask &mask)
+      : wxObject()
 {
     BITMAP bmp;