diff --git a/samples/docview/doc.cpp b/samples/docview/doc.cpp
index 50ab0ba337..2ce98172f1 100644
--- a/samples/docview/doc.cpp
+++ b/samples/docview/doc.cpp
@@ -29,7 +29,7 @@
 #endif
 
 #if wxUSE_STD_IOSTREAM
-    #include "wx/ioswrap.h"
+    #include <iostream>
 #else
     #include "wx/txtstrm.h"
 #endif
diff --git a/samples/typetest/typetest.cpp b/samples/typetest/typetest.cpp
index 69d7433e45..891a23b568 100644
--- a/samples/typetest/typetest.cpp
+++ b/samples/typetest/typetest.cpp
@@ -32,8 +32,7 @@
 #undef new
 #endif
 
-#include "wx/ioswrap.h"
-
+#include <iostream>
 #include <fstream>
 
 #include "wx/wfstream.h"
diff --git a/samples/widgets/textctrl.cpp b/samples/widgets/textctrl.cpp
index ff6ea02226..e908c636a3 100644
--- a/samples/widgets/textctrl.cpp
+++ b/samples/widgets/textctrl.cpp
@@ -40,7 +40,6 @@
 #endif
 
 #include "wx/sizer.h"
-#include "wx/ioswrap.h"
 
 #include "widgets.h"