diff --git a/lib/c_wrapper.cpp b/lib/c_wrapper.cpp
index deae11d..ebc7854 100644
--- a/lib/c_wrapper.cpp
+++ b/lib/c_wrapper.cpp
@@ -24,6 +24,7 @@
 #include "musicbrainz.h"
 #include "trm.h"
 #include "mb_c.h"
+#include <string.h>
 
 extern "C"
 {
diff --git a/lib/comhttpsocket.cpp b/lib/comhttpsocket.cpp
index 067313b..4371772 100644
--- a/lib/comhttpsocket.cpp
+++ b/lib/comhttpsocket.cpp
@@ -20,6 +20,7 @@
 #endif
 #include <stdlib.h>
 #include <assert.h>
+#include <string.h>
 
 const char* g_strCOMVer = "libmusicbrainz/"VERSION;
 
diff --git a/lib/comsocket.cpp b/lib/comsocket.cpp
index 01a94be..7bfc4dd 100644
--- a/lib/comsocket.cpp
+++ b/lib/comsocket.cpp
@@ -44,6 +44,7 @@ ____________________________________________________________________________*/
 #include <net/if.h>
 #include <sys/ioctl.h>
 #endif
+#include <string.h>
 
 #define mb_socklen_t ACCEPT_ARG3
 
diff --git a/lib/http.cpp b/lib/http.cpp
index 85390a3..e63713c 100644
--- a/lib/http.cpp
+++ b/lib/http.cpp
@@ -67,6 +67,7 @@
 #ifdef __QNX__
 #include <strings.h>
 #endif
+#include <string.h>
 
 using namespace std;
 
diff --git a/lib/sigclient.cpp b/lib/sigclient.cpp
index 9f76008..4bbbaae 100644
--- a/lib/sigclient.cpp
+++ b/lib/sigclient.cpp
@@ -32,6 +32,7 @@ email                : ijr@relatable.com
 #ifdef WIN32
 #pragma warning(disable:4786)
 #endif
+#include <string.h>
 
 #include "sigclient.h"
 #include "comhttpsocket.h"