diff --git a/intern/ghost/intern/GHOST_WindowX11.cpp b/intern/ghost/intern/GHOST_WindowX11.cpp
index 30fa30e59e6..0c999587d9b 100644
--- a/intern/ghost/intern/GHOST_WindowX11.cpp
+++ b/intern/ghost/intern/GHOST_WindowX11.cpp
@@ -42,6 +42,8 @@
 #include <strings.h>
 #endif
 
+#include <cstring>
+#include <cstdio>
 
 // For obscure full screen mode stuuf
 // lifted verbatim from blut.
diff --git a/intern/string/STR_String.h b/intern/string/STR_String.h
index 2da2b57c6f2..7b02e6c1855 100644
--- a/intern/string/STR_String.h
+++ b/intern/string/STR_String.h
@@ -47,6 +47,10 @@
 
 #include <vector>
 #include <limits.h>
+
+#include <cstring>
+#include <cstdlib>
+
 using namespace std;
 
 
diff --git a/source/blender/yafray/intern/export_File.cpp b/source/blender/yafray/intern/export_File.cpp
index 73b30105b27..db84ed01ab9 100644
--- a/source/blender/yafray/intern/export_File.cpp
+++ b/source/blender/yafray/intern/export_File.cpp
@@ -2,6 +2,8 @@
 
 #include <math.h>
 
+#include <cstring>
+
 using namespace std;
 
 static string command_path = "";
diff --git a/source/blender/yafray/intern/export_Plugin.cpp b/source/blender/yafray/intern/export_Plugin.cpp
index c8d20180f8c..560294e2ffa 100644
--- a/source/blender/yafray/intern/export_Plugin.cpp
+++ b/source/blender/yafray/intern/export_Plugin.cpp
@@ -1,6 +1,9 @@
 #include "export_Plugin.h"
 
 #include <math.h>
+
+#include <cstring>
+
 using namespace std;
 
 
diff --git a/source/blender/yafray/intern/yafray_Render.cpp b/source/blender/yafray/intern/yafray_Render.cpp
index d9d421e0720..01da4683d71 100644
--- a/source/blender/yafray/intern/yafray_Render.cpp
+++ b/source/blender/yafray/intern/yafray_Render.cpp
@@ -8,6 +8,8 @@
 
 #include <math.h>
 
+#include <cstring>
+
 using namespace std;
 
 void yafrayRender_t::clearAll()
diff --git a/source/gameengine/GamePlayer/common/GPC_KeyboardDevice.cpp b/source/gameengine/GamePlayer/common/GPC_KeyboardDevice.cpp
index dbe875957b0..8bbac10f7ca 100644
--- a/source/gameengine/GamePlayer/common/GPC_KeyboardDevice.cpp
+++ b/source/gameengine/GamePlayer/common/GPC_KeyboardDevice.cpp
@@ -32,6 +32,8 @@
 
 #include "GPC_KeyboardDevice.h"
 
+#include <cstdlib>
+
 /** 
  * NextFrame toggles currentTable with previousTable,
  * and copies relevant event information from previous to current table