diff --git a/contrib/src/ogl/basic.cpp b/contrib/src/ogl/basic.cpp
index b18c4ad517..16e198b1e2 100644
--- a/contrib/src/ogl/basic.cpp
+++ b/contrib/src/ogl/basic.cpp
@@ -30,12 +30,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
-
 #include <stdio.h>
 #include <ctype.h>
 #include <math.h>
diff --git a/contrib/src/ogl/basic2.cpp b/contrib/src/ogl/basic2.cpp
index e12fa3e07c..d8a59bc725 100644
--- a/contrib/src/ogl/basic2.cpp
+++ b/contrib/src/ogl/basic2.cpp
@@ -30,12 +30,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
-
 #include <stdio.h>
 #include <ctype.h>
 #include <math.h>
diff --git a/contrib/src/ogl/canvas.cpp b/contrib/src/ogl/canvas.cpp
index 755510eb83..55e87da514 100644
--- a/contrib/src/ogl/canvas.cpp
+++ b/contrib/src/ogl/canvas.cpp
@@ -30,12 +30,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
-
 #include <ctype.h>
 #include <math.h>
 #include <stdlib.h>
diff --git a/contrib/src/ogl/lines.cpp b/contrib/src/ogl/lines.cpp
index 73710978f7..fac1286eac 100644
--- a/contrib/src/ogl/lines.cpp
+++ b/contrib/src/ogl/lines.cpp
@@ -31,12 +31,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
-
 #include <ctype.h>
 #include <math.h>
 
diff --git a/contrib/src/ogl/misc.cpp b/contrib/src/ogl/misc.cpp
index c6dc4c8d7e..d40bd8a896 100644
--- a/contrib/src/ogl/misc.cpp
+++ b/contrib/src/ogl/misc.cpp
@@ -32,11 +32,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
 #include <ctype.h>
 #include <math.h>
 #include <stdlib.h>
diff --git a/contrib/src/ogl/ogldiag.cpp b/contrib/src/ogl/ogldiag.cpp
index d7ec3fc0b6..a1b71884b0 100644
--- a/contrib/src/ogl/ogldiag.cpp
+++ b/contrib/src/ogl/ogldiag.cpp
@@ -30,17 +30,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#include <fstream.h>
-#else
-#include <iostream>
-#include <fstream>
-#ifdef _MSC_VER
-//using namespace std;
-#endif
-#endif
-
 #include <ctype.h>
 #include <math.h>
 #include <stdlib.h>
diff --git a/contrib/src/ogl/oglmisc.cpp b/contrib/src/ogl/oglmisc.cpp
index a9a466c2da..30deb1d87b 100644
--- a/contrib/src/ogl/oglmisc.cpp
+++ b/contrib/src/ogl/oglmisc.cpp
@@ -32,11 +32,6 @@
 #undef new
 #endif
 
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
 #include <ctype.h>
 #include <math.h>
 #include <stdlib.h>