diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index 000736d89c9517ac531664191a5d6604f315a69b..750abf211e2608267d25174531c73e74d058ca6f 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -150,6 +150,7 @@ utf8_wcstombs(__u8 *s, const wchar_t *pwcs, int maxlen)
 			}
 		} else {
 			*op++ = (__u8) *ip;
+			maxlen--;
 		}
 		ip++;
 	}