--- a/m4/stdint.m4
+++ b/m4/stdint.m4
@@ -15,7 +15,7 @@ AC_DEFUN_ONCE([gl_STDINT_H],
   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
 
   AC_REQUIRE([gl_LIMITS_H])
-  AC_REQUIRE([gt_TYPE_WINT_T])
+  AC_REQUIRE([gt_TYPE_WINT_T_FO])
 
   dnl Check for long long int and unsigned long long int.
   AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
--- a/m4/wint_t.m4
+++ b/m4/wint_t.m4
@@ -9,7 +9,7 @@ dnl Test whether <wchar.h> has the 'wint
 dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'.
 dnl Prerequisite: AC_PROG_CC
 
-AC_DEFUN([gt_TYPE_WINT_T],
+AC_DEFUN([gt_TYPE_WINT_T_FO],
 [
   AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
     [AC_COMPILE_IFELSE(