diff --git a/build/BuildTasks/GitVersion.cs b/build/BuildTasks/GitVersion.cs
index b0b800b41..33003d9bf 100644
--- a/build/BuildTasks/GitVersion.cs
+++ b/build/BuildTasks/GitVersion.cs
@@ -100,7 +100,7 @@ namespace BuildTasks {
                             ExcludeReachableFrom = releaseVersion.Target.Sha
                         };
 
-                        if (repo.Commits.QueryBy(filter).ToList().size() == 0)
+                        if (repo.Commits.QueryBy(filter).ToList().Count == 0)
                             releaseVersion = tag;
                     }