diff --git a/src/ptlib/unix/channel.cxx b/src/ptlib/unix/channel.cxx
index 2935644..80c8d09 100644
--- a/src/ptlib/unix/channel.cxx
+++ b/src/ptlib/unix/channel.cxx
@@ -34,6 +34,7 @@
 #pragma implementation "channel.h"
 #pragma implementation "indchan.h"
 
+#include <sys/uio.h>
 #include <ptlib.h>
 #include <sys/ioctl.h>
 
diff --git a/src/ptlib/unix/svcproc.cxx b/src/ptlib/unix/svcproc.cxx
index 4f21025..2c957ef 100644
--- a/src/ptlib/unix/svcproc.cxx
+++ b/src/ptlib/unix/svcproc.cxx
@@ -217,7 +217,7 @@ int PServiceProcess::InitialiseService()
     pid_t pid;
 
     {
-      ifstream pidfile(pidfilename);
+      ifstream pidfile((const char *)pidfilename);
       if (!pidfile.is_open()) {
         cout << "Could not open pid file: \"" << pidfilename << "\""
                 " - " << strerror(errno) << endl;
@@ -384,7 +384,7 @@ int PServiceProcess::InitialiseService()
   // Run as a daemon, ie fork
 
   if (!pidfilename) {
-    ifstream pidfile(pidfilename);
+    ifstream pidfile((const char *)pidfilename);
     if (pidfile.is_open()) {
       pid_t pid;
       pidfile >> pid;
@@ -412,7 +412,7 @@ int PServiceProcess::InitialiseService()
       cout << "Daemon started with pid " << pid << endl;
       if (!pidfilename) {
         // Write out the child pid to magic file in /var/run (at least for linux)
-        ofstream pidfile(pidfilename);
+        ofstream pidfile((const char *)pidfilename);
         if (pidfile.is_open())
           pidfile << pid;
         else