diff --git a/lib/libc/locale/mblen.c b/lib/libc/locale/mblen.c
index 8486e7173cbf..65d0aa7c478f 100644
--- a/lib/libc/locale/mblen.c
+++ b/lib/libc/locale/mblen.c
@@ -48,9 +48,5 @@ mblen(const char *s, size_t n)
 	rval = __mbrtowc(NULL, s, n, &mbs);
 	if (rval == (size_t)-1 || rval == (size_t)-2)
 		return (-1);
-	if (rval > INT_MAX) {
-		errno = ERANGE;
-		return (-1);
-	}
 	return ((int)rval);
 }
diff --git a/lib/libc/locale/mbtowc.c b/lib/libc/locale/mbtowc.c
index 994d243fb2c8..8ee280aa2b05 100644
--- a/lib/libc/locale/mbtowc.c
+++ b/lib/libc/locale/mbtowc.c
@@ -49,9 +49,5 @@ mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n)
 	rval = __mbrtowc(pwc, s, n, &mbs);
 	if (rval == (size_t)-1 || rval == (size_t)-2)
 		return (-1);
-	if (rval > INT_MAX) {
-		errno = ERANGE;
-		return (-1);
-	}
 	return ((int)rval);
 }
diff --git a/lib/libc/locale/wctomb.c b/lib/libc/locale/wctomb.c
index 6616a661e891..d9c607e69760 100644
--- a/lib/libc/locale/wctomb.c
+++ b/lib/libc/locale/wctomb.c
@@ -48,9 +48,5 @@ wctomb(char *s, wchar_t wchar)
 	}
 	if ((rval = __wcrtomb(s, wchar, &mbs)) == (size_t)-1)
 		return (-1);
-	if (rval > INT_MAX) {
-		errno = ERANGE;
-		return (-1);
-	}
 	return ((int)rval);
 }