--- /dev/null
+--- a/runtime/platform/freebsd.h
++++ b/runtime/platform/freebsd.h
+@@ -38,9 +38,4 @@
+
+ #define MLton_Platform_OS_host "freebsd"
+
+-/* This is probably debian specific, since freebsd worked w/o it before. */
+-#if (defined (__FreeBSD_kernel__))
+-#define getpgrp() getpgrp(getpid())
+-#endif
+-
+ extern char **environ; /* for Posix_ProcEnv_environ */