1 files changed, 3 insertions, 1 deletions
diff --git a/IrcTokens/Tests/ParserTests.cs b/IrcTokens/Tests/ParserTests.cs
index 502b6d6..ad734cf 100644
--- a/IrcTokens/Tests/ParserTests.cs
+++ b/IrcTokens/Tests/ParserTests.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using IrcTokens.Tests.Data;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
@@ -27,7 +28,8 @@ namespace IrcTokens.Tests
                 var tokens = new Line(test.Input);
                 var atoms = test.Atoms;
 
-                Assert.AreEqual(atoms.Verb.ToUpper(), tokens.Command, $"command failed on: '{test.Input}'");
+                Assert.AreEqual(atoms.Verb.ToUpper(CultureInfo.InvariantCulture), tokens.Command,
+                    $"command failed on: '{test.Input}'");
                 Assert.AreEqual(atoms.Source, tokens.Source, $"source failed on: '{test.Input}'");
                 CollectionAssert.AreEqual(atoms.Tags, tokens.Tags, $"tags failed on: '{test.Input}'");
                 CollectionAssert.AreEqual(atoms.Params ?? new List<string>(), tokens.Params, $"params failed on: '{test.Input}'");