diff --git a/encfs/DirNode.cpp b/encfs/DirNode.cpp
index 6c683d5..8b24c7c 100644
--- a/encfs/DirNode.cpp
+++ b/encfs/DirNode.cpp
@@ -31,6 +31,8 @@
 #include <sys/fsuid.h>
 #endif
 
+#include <cstring>
+
 #include "Context.h"
 #include "Cipher.h"
 #include "Mutex.h"
diff --git a/encfs/FileNode.cpp b/encfs/FileNode.cpp
index 70d2adb..c7fa357 100644
--- a/encfs/FileNode.cpp
+++ b/encfs/FileNode.cpp
@@ -28,6 +28,8 @@
 #include <sys/fsuid.h>
 #endif
 
+#include <cstring>
+
 #include "config.h"
 
 #include "FileNode.h"
diff --git a/encfs/NameIO.cpp b/encfs/NameIO.cpp
index 8c28f16..988bd78 100644
--- a/encfs/NameIO.cpp
+++ b/encfs/NameIO.cpp
@@ -22,6 +22,7 @@
 #include <rlog/Error.h>
 
 #include <map>
+#include <cstring>
 
 // for static build.  Need to reference the modules which are registered at
 // run-time, to ensure that the linker doesn't optimize them away.
diff --git a/encfs/NullNameIO.cpp b/encfs/NullNameIO.cpp
index 0e76da0..90485ef 100644
--- a/encfs/NullNameIO.cpp
+++ b/encfs/NullNameIO.cpp
@@ -20,6 +20,8 @@
 #include "Cipher.h"
 #include "base64.h"
 
+#include <cstring>
+
 using namespace rel;
 using boost::shared_ptr;
 
diff --git a/encfs/StreamNameIO.cpp b/encfs/StreamNameIO.cpp
index c584be6..cd7f4a4 100644
--- a/encfs/StreamNameIO.cpp
+++ b/encfs/StreamNameIO.cpp
@@ -24,6 +24,7 @@
 #include <rlog/Error.h>
 
 #include "i18n.h"
+#include <cstring>
 
 using namespace rel;
 using namespace std;