diff --git a/samples/exec/exec.cpp b/samples/exec/exec.cpp
index 63fec8e39f..13cfdc28e9 100644
--- a/samples/exec/exec.cpp
+++ b/samples/exec/exec.cpp
@@ -202,7 +202,7 @@ protected:
 
     void DoSend()
     {
-        m_out.WriteString(m_textIn->GetValue() + '\n');
+        m_out.WriteString(m_textIn->GetValue() + _T('\n'));
         m_textIn->Clear();
 
         DoGet();
diff --git a/samples/menu/menu.cpp b/samples/menu/menu.cpp
index ebe58946da..b5acd519f7 100644
--- a/samples/menu/menu.cpp
+++ b/samples/menu/menu.cpp
@@ -584,7 +584,7 @@ void MyFrame::OnFindMenu(wxCommandEvent& WXUNUSED(event))
                      (
                         _T("Enter label to search for: "),
                         _T("Find menu"),
-                        "",
+                        _T(""),
                         this
                      );
 
@@ -798,7 +798,7 @@ void MyFrame::OnFindMenuItem(wxCommandEvent& WXUNUSED(event))
                      (
                         _T("Enter label to search for: "),
                         _T("Find menu item"),
-                        "",
+                        _T(""),
                         this
                      );
 
diff --git a/utils/hhp2cached/hhp2cached.cpp b/utils/hhp2cached/hhp2cached.cpp
index 9f22693b9d..655f4f8dbb 100644
--- a/utils/hhp2cached/hhp2cached.cpp
+++ b/utils/hhp2cached/hhp2cached.cpp
@@ -33,7 +33,7 @@ bool MyApp::OnInit()
     for (int i = 1; i < argc; i++)
     {
         wxHtmlHelpData data;
-        wxPrintf("Processing %s...\n", argv[i]);
+        wxPrintf(_T("Processing %s...\n"), argv[i]);
         data.SetTempDir(wxPathOnly(argv[i]));
         data.AddBook(argv[i]);
     }