diff --git a/ccopsOptions.cc b/ccopsOptions.cc
index 5a8272dc9dbae4f41bd0188f45f2607c6a61aed9..997e0188d8e192cc7375d72c6998a5e1e68dc8b8 100644
--- a/ccopsOptions.cc
+++ b/ccopsOptions.cc
@@ -9,8 +9,8 @@
 #define WANT_STREAM
 #define WANT_MATH
 
-#include <iostream.h>
-#include <fstream.h>
+#include <iostream>
+#include <fstream>
 #include <stdlib.h>
 #include <stdio.h>
 #include "ccopsOptions.h"
diff --git a/ccopsOptions.h b/ccopsOptions.h
index 6263ea63dadcabd3f22a35570e4df7f29006331e..efb79429cb0245f36ebff08430a67ea7570138c2 100644
--- a/ccopsOptions.h
+++ b/ccopsOptions.h
@@ -10,12 +10,11 @@
 #define ccopsOptions_h
 
 #include <string>
-#include <iostream.h>
-#include <fstream.h>
+#include <iostream>
+#include <fstream>
 #include <stdlib.h>
 #include <stdio.h>
 #include "utils/options.h"
-//#include "newmatall.h"
 using namespace Utilities;
 
 namespace CCOPS {
diff --git a/probtrackxOptions.h b/probtrackxOptions.h
index ca65fc0af38972e3e5a5f7d0d4e7ba0630a76e6d..f7e6ae97fa983077eec12d568a2962668e67cee7 100644
--- a/probtrackxOptions.h
+++ b/probtrackxOptions.h
@@ -10,8 +10,8 @@
 #define probtrackxOptions_h
 
 #include <string> 
-#include <iostream.h>
-#include <fstream.h>
+#include <iostream>
+#include <fstream>
 #include <stdlib.h>
 #include <stdio.h>
 #include "utils/options.h"