diff --git a/configure.ac b/configure.ac
index c9c1795c2..4c78b0712 100644
--- a/configure.ac
+++ b/configure.ac
@@ -766,7 +766,7 @@ AC_CHECK_FUNCS([DINFINITY DQNAN cexp chsize clog clog10 ctermid		\
   strdup system usleep atexit on_exit chown link fcntl ttyname getpwent	\
   getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp	\
   index bcopy memcpy rindex truncate unsetenv isblank _NSGetEnviron	\
-  strcoll strcoll_l strtol_l newlocale uselocale utimensat		\
+  strcoll strcoll_l strtod_l strtol_l newlocale uselocale utimensat	\
   sched_getaffinity sched_setaffinity sendfile])
 
 # Reasons for testing:
diff --git a/libguile/i18n.c b/libguile/i18n.c
index 84c6bfc58..6f75966a1 100644
--- a/libguile/i18n.c
+++ b/libguile/i18n.c
@@ -1335,7 +1335,7 @@ SCM_DEFINE (scm_locale_string_to_integer, "locale-string->integer",
 
   if (c_locale != NULL)
     {
-#if defined(USE_GNU_LOCALE_API) && defined(HAVE_STRTOL_L)
+#if defined USE_GNU_LOCALE_API && defined HAVE_STRTOL_L
       c_result = strtol_l (c_str, &c_endptr, c_base, c_locale);
 #else
       RUN_IN_LOCALE_SECTION (c_locale,
@@ -1379,7 +1379,7 @@ SCM_DEFINE (scm_locale_string_to_inexact, "locale-string->inexact",
 
   if (c_locale != NULL)
     {
-#ifdef USE_GNU_LOCALE_API
+#if defined USE_GNU_LOCALE_API && defined HAVE_STRTOD_L
       c_result = strtod_l (c_str, &c_endptr, c_locale);
 #else
       RUN_IN_LOCALE_SECTION (c_locale,