diff --git a/BasiliskII/src/Unix/acinclude.m4 b/BasiliskII/src/Unix/acinclude.m4
index 9137816d..9876754d 100644
--- a/BasiliskII/src/Unix/acinclude.m4
+++ b/BasiliskII/src/Unix/acinclude.m4
@@ -26,21 +26,3 @@ fi
 AC_SUBST(GNOMEUI_CFLAGS)
 AC_SUBST(GNOMEUI_LIBS)  
 ])
-
-
-dnl Check for socklen_t type
-
-AC_DEFUN(TYPE_SOCKLEN_T,
-[AC_REQUIRE([AC_HEADER_STDC])dnl
-AC_MSG_CHECKING(for socklen_t)
-AC_CACHE_VAL(ac_cv_type_socklen_t,
-[AC_EGREP_CPP(dnl
-changequote(<<,>>)dnl
-<<(^|[^a-zA-Z_0-9])socklen_t[^a-zA-Z_0-9]>>dnl
-changequote([,]), [#include <sys/types.h>
-#include <sys/socket.h>], ac_cv_type_socklen_t=yes, ac_cv_type_socklen_t=no)])dnl
-AC_MSG_RESULT($ac_cv_type_socklen_t)
-if test $ac_cv_type_socklen_t = no; then
-  AC_DEFINE(socklen_t, int)
-fi
-])