--- a/src/osd.c
+++ b/src/osd.c
@@ -516,7 +516,7 @@
 # if defined (WIN32) || defined (OS2) && defined (__IBMC__)
   int pid = _getpid ();
 # else
-  __pid_t pid = getpid ();
+  pid_t pid = getpid ();
 # endif
 
   return (int) pid;