diff --git a/lib/libc/locale/lmonetary.c b/lib/libc/locale/lmonetary.c
index e42c6c5f50a5..8e98749e4398 100644
--- a/lib/libc/locale/lmonetary.c
+++ b/lib/libc/locale/lmonetary.c
@@ -68,7 +68,7 @@ __monetary_load_locale(const char *name) {
 	ret = __part_load_locale(name, &_monetary_using_locale,
 		monetary_locale_buf, "LC_MONETARY", LCMONETARY_SIZE,
 		(const char **)&_monetary_locale);
-	if (!ret)
+	if (!ret && _monetary_using_locale)
 		_monetary_locale.mon_grouping =
 		     __fix_locale_grouping_str(_monetary_locale.mon_grouping);
 	return ret;
diff --git a/lib/libc/locale/lnumeric.c b/lib/libc/locale/lnumeric.c
index 875406978f92..3fea4db96cae 100644
--- a/lib/libc/locale/lnumeric.c
+++ b/lib/libc/locale/lnumeric.c
@@ -56,7 +56,7 @@ __numeric_load_locale(const char *name) {
 	ret = __part_load_locale(name, &_numeric_using_locale,
 		numeric_locale_buf, "LC_NUMERIC", LCNUMERIC_SIZE,
 		(const char **)&_numeric_locale);
-	if (!ret)
+	if (!ret && _numeric_using_locale)
 		_numeric_locale.grouping =
 			__fix_locale_grouping_str(_numeric_locale.grouping);
 	return ret;