diff --git a/configure.in b/configure.in
index f19220b75..9a70940e8 100644
--- a/configure.in
+++ b/configure.in
@@ -101,58 +101,8 @@ AC_FIND_FUNC_NO_LIBS(tgetent, termcap)
 
 dnl Checks for library functions.
 
-AC_CACHE_CHECK(for working snprintf,ac_cv_func_snprintf_working,
-ac_cv_func_snprintf_working=yes
-AC_TRY_RUN([
-#include <stdio.h>
-#include <string.h>
-int main()
-{
-changequote(`,')dnl
-	char foo[3];
-changequote([,])dnl
-	snprintf(foo, 2, "12");
-	return strcmp(foo, "1");
-}],:,ac_cv_func_snprintf_working=no,:))
-: << END
-@@@funcs="$funcs snprintf"@@@
-END
-if test "$ac_cv_func_snprintf_working" = yes; then
-	foo=HAVE_SNPRINTF
-	AC_DEFINE_UNQUOTED($foo)
-fi
-
-AC_CACHE_CHECK(for working vsnprintf,ac_cv_func_vsnprintf_working,
-ac_cv_func_vsnprintf_working=yes
-AC_TRY_RUN([
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-
-int foo(int num, ...)
-{
-changequote(`,')dnl
-	char bar[3];
-changequote([,])dnl
-	va_list arg;
-	va_start(arg, num);
-	vsnprintf(bar, 2, "%s", arg);
-	va_end(arg);
-	return strcmp(bar, "1");
-}
-
-
-int main()
-{
-	return foo(0, "12");
-}],:,ac_cv_func_vsnprintf_working=no,:))
-: << END
-@@@funcs="$funcs vsnprintf"@@@
-END
-if test "$ac_cv_func_vsnprintf_working" = yes; then
-	foo=HAVE_VSNPRINTF
-	AC_DEFINE_UNQUOTED($foo)
-fi
+AC_BROKEN_SNPRINTF
+AC_BROKEN_VSNPRINTF
 
 AC_CHECK_FUNCS(_getpty asnprintf asprintf fcntl gethostname)
 AC_CHECK_FUNCS(getmsg grantpt logwtmp mktime ptsname rand random)