From d408a5994e9ff6b6eef72600495f1bedaef4a809 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Thu, 25 Jul 2019 08:31:16 +0100
Subject: [PATCH] Add a missing trailing "." to an error message

Closes #775
---
 lib/src/visitor/serialize.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/src/visitor/serialize.dart b/lib/src/visitor/serialize.dart
index 8451fc284..34ce654ae 100644
--- a/lib/src/visitor/serialize.dart
+++ b/lib/src/visitor/serialize.dart
@@ -562,7 +562,7 @@ class _SerializeVisitor
       _buffer.writeCharCode($lbracket);
     } else if (value.asList.isEmpty) {
       if (!_inspect) {
-        throw SassScriptException("() isn't a valid CSS value");
+        throw SassScriptException("() isn't a valid CSS value.");
       }
       _buffer.write("()");
       return;