From c6e11cbb9dd0663e16697446cce93cab10e53347 Mon Sep 17 00:00:00 2001
From: Andrew Arnott <andrewarnott@gmail.com>
Date: Mon, 12 Feb 2018 09:54:51 -0800
Subject: [PATCH] Fix Requires logic in msbuild task

---
 src/Nerdbank.GitVersioning.Tasks/GetBuildVersion.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Nerdbank.GitVersioning.Tasks/GetBuildVersion.cs b/src/Nerdbank.GitVersioning.Tasks/GetBuildVersion.cs
index cb3c1edb..2522b490 100644
--- a/src/Nerdbank.GitVersioning.Tasks/GetBuildVersion.cs
+++ b/src/Nerdbank.GitVersioning.Tasks/GetBuildVersion.cs
@@ -177,7 +177,7 @@ protected override bool ExecuteInner()
             {
                 if (!string.IsNullOrEmpty(this.ProjectPathRelativeToGitRepoRoot))
                 {
-                    Requires.Argument(Path.IsPathRooted(this.ProjectPathRelativeToGitRepoRoot), nameof(this.ProjectPathRelativeToGitRepoRoot), "Path must be relative.");
+                    Requires.Argument(!Path.IsPathRooted(this.ProjectPathRelativeToGitRepoRoot), nameof(this.ProjectPathRelativeToGitRepoRoot), "Path must be relative.");
                     Requires.Argument(!(
                         this.ProjectPathRelativeToGitRepoRoot.Contains(".." + Path.DirectorySeparatorChar) || 
                         this.ProjectPathRelativeToGitRepoRoot.Contains(".." + Path.AltDirectorySeparatorChar)),