diff --git a/src/OpenMesh/Core/IO/reader/OFFReader.hh b/src/OpenMesh/Core/IO/reader/OFFReader.hh
index da069f4e..755093a3 100644
--- a/src/OpenMesh/Core/IO/reader/OFFReader.hh
+++ b/src/OpenMesh/Core/IO/reader/OFFReader.hh
@@ -69,9 +69,6 @@
 #include <OpenMesh/Core/Utils/SingletonT.hh>
 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
 
-#ifndef WIN32
-#include <string.h>
-#endif
 
 //== NAMESPACES ===============================================================
 
diff --git a/src/OpenMesh/Core/IO/reader/PLYReader.hh b/src/OpenMesh/Core/IO/reader/PLYReader.hh
index 20958f74..f8c6283b 100644
--- a/src/OpenMesh/Core/IO/reader/PLYReader.hh
+++ b/src/OpenMesh/Core/IO/reader/PLYReader.hh
@@ -72,9 +72,6 @@
 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
 #include <OpenMesh/Core/Utils/GenProg.hh>
 
-#ifndef WIN32
-#include <string.h>
-#endif
 
 //== NAMESPACES ===============================================================
 
diff --git a/src/OpenMesh/Core/IO/reader/STLReader.hh b/src/OpenMesh/Core/IO/reader/STLReader.hh
index d01fd789..b6426236 100644
--- a/src/OpenMesh/Core/IO/reader/STLReader.hh
+++ b/src/OpenMesh/Core/IO/reader/STLReader.hh
@@ -68,10 +68,6 @@
 #include <OpenMesh/Core/Utils/SingletonT.hh>
 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
 
-#ifndef WIN32
-#include <string.h>
-#endif
-
 
 //== NAMESPACES ===============================================================
 
diff --git a/src/OpenMesh/Core/IO/writer/OFFWriter.hh b/src/OpenMesh/Core/IO/writer/OFFWriter.hh
index 22300e39..b6f4e144 100644
--- a/src/OpenMesh/Core/IO/writer/OFFWriter.hh
+++ b/src/OpenMesh/Core/IO/writer/OFFWriter.hh
@@ -60,8 +60,6 @@
 
 //=== INCLUDES ================================================================
 
-
-#include <stdio.h>
 #include <string>
 #include <ostream>
 
diff --git a/src/OpenMesh/Core/IO/writer/PLYWriter.hh b/src/OpenMesh/Core/IO/writer/PLYWriter.hh
index 96d4f5c0..65addb66 100644
--- a/src/OpenMesh/Core/IO/writer/PLYWriter.hh
+++ b/src/OpenMesh/Core/IO/writer/PLYWriter.hh
@@ -60,8 +60,6 @@
 
 //=== INCLUDES ================================================================
 
-
-#include <stdio.h>
 #include <string>
 #include <ostream>
 #include <vector>
diff --git a/src/OpenMesh/Core/IO/writer/STLWriter.hh b/src/OpenMesh/Core/IO/writer/STLWriter.hh
index 5c49d208..e30af47e 100644
--- a/src/OpenMesh/Core/IO/writer/STLWriter.hh
+++ b/src/OpenMesh/Core/IO/writer/STLWriter.hh
@@ -61,11 +61,7 @@
 //=== INCLUDES ================================================================
 
 // -------------------- STL
-#if defined( OM_CC_MIPS )
-#  include <stdio.h>
-#else
-#  include <cstdio>
-#endif
+#include <iosfwd>
 #include <string>
 // -------------------- OpenMesh
 #include <OpenMesh/Core/System/config.h>
diff --git a/src/OpenMesh/Core/IO/writer/VTKWriter.hh b/src/OpenMesh/Core/IO/writer/VTKWriter.hh
index ce613423..40d9e117 100644
--- a/src/OpenMesh/Core/IO/writer/VTKWriter.hh
+++ b/src/OpenMesh/Core/IO/writer/VTKWriter.hh
@@ -10,7 +10,7 @@
 //=== INCLUDES ================================================================
 
 #include <string>
-#include <fstream>
+#include <iosfwd>
 
 #include <OpenMesh/Core/System/config.h>
 #include <OpenMesh/Core/Utils/SingletonT.hh>