diff --git a/samples/widgets/dirpicker.cpp b/samples/widgets/dirpicker.cpp
index 13a664bc8a..6614c0a8b2 100644
--- a/samples/widgets/dirpicker.cpp
+++ b/samples/widgets/dirpicker.cpp
@@ -162,7 +162,7 @@ void DirPickerWidgetsPage::CreateContent()
     // right pane
     m_sizer = new wxBoxSizer(wxVERTICAL);
     m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
-    m_sizer->Add(m_dirPicker, 0, wxALIGN_CENTER|wxALL, 5);
+    m_sizer->Add(m_dirPicker, 0, wxEXPAND|wxALL, 5);
     m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
 
     // global pane
diff --git a/samples/widgets/filepicker.cpp b/samples/widgets/filepicker.cpp
index 1c91ca6a6e..28cbc3f821 100644
--- a/samples/widgets/filepicker.cpp
+++ b/samples/widgets/filepicker.cpp
@@ -183,7 +183,7 @@ void FilePickerWidgetsPage::CreateContent()
     // right pane
     m_sizer = new wxBoxSizer(wxVERTICAL);
     m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
-    m_sizer->Add(m_filePicker, 0, wxALIGN_CENTER|wxALL, 5);
+    m_sizer->Add(m_filePicker, 0, wxEXPAND|wxALL, 5);
     m_sizer->Add(1, 1, 1, wxGROW | wxALL, 5); // spacer
 
     // global pane