diff --git a/src/kits/network/init.cpp b/src/kits/network/init.cpp
index 4dca5ba28d..291591b886 100644
--- a/src/kits/network/init.cpp
+++ b/src/kits/network/init.cpp
@@ -12,7 +12,7 @@
 #include <OS.h>
 #include <image.h>
 
-#include <cstring>
+#include <string.h>
 
 
 bool __gR5Compatibility = false;
diff --git a/src/kits/network/r5_compatibility.cpp b/src/kits/network/r5_compatibility.cpp
index ab2174cc60..c4d1135fcd 100644
--- a/src/kits/network/r5_compatibility.cpp
+++ b/src/kits/network/r5_compatibility.cpp
@@ -10,7 +10,9 @@
 
 
 #include <SupportDefs.h>
+#include <TLS.h>
 
+#include <stdio.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -18,6 +20,7 @@
 struct net_settings;
 
 extern "C" {
+	int *_h_errnop(void);
 	int _netstat(int fd, char **output, int verbose);
 	int closesocket(int socket);
 	char *find_net_setting(net_settings* settings, const char* heading,
@@ -29,6 +32,16 @@ extern "C" {
 }
 
 
+int32 __gHErrnoTLS = tls_allocate();
+
+
+int *
+_h_errnop(void)
+{
+	return (int *)tls_address(__gHErrnoTLS);
+}
+
+
 int
 _netstat(int fd, char **output, int verbose)
 {