diff --git a/LibGit2Sharp/CommitFilter.cs b/LibGit2Sharp/CommitFilter.cs
index d3a815216..fe0bfd127 100644
--- a/LibGit2Sharp/CommitFilter.cs
+++ b/LibGit2Sharp/CommitFilter.cs
@@ -57,7 +57,7 @@ public object Since
 
         internal IList<object> SinceList
         {
-            get { return ToList(Since); }
+            get { return ToList(IncludeReachableFrom); }
         }
 
         /// <summary>
@@ -87,7 +87,7 @@ public object Until
 
         internal IList<object> UntilList
         {
-            get { return ToList(Until); }
+            get { return ToList(ExcludeReachableFrom); }
         }
 
         /// <summary>
diff --git a/LibGit2Sharp/CommitLog.cs b/LibGit2Sharp/CommitLog.cs
index 4349c0fde..7568181d3 100644
--- a/LibGit2Sharp/CommitLog.cs
+++ b/LibGit2Sharp/CommitLog.cs
@@ -73,8 +73,8 @@ IEnumerator IEnumerable.GetEnumerator()
         public ICommitLog QueryBy(CommitFilter filter)
         {
             Ensure.ArgumentNotNull(filter, "filter");
-            Ensure.ArgumentNotNull(filter.Since, "filter.Since");
-            Ensure.ArgumentNotNullOrEmptyString(filter.Since.ToString(), "filter.Since");
+            Ensure.ArgumentNotNull(filter.IncludeReachableFrom, "filter.IncludeReachableFrom");
+            Ensure.ArgumentNotNullOrEmptyString(filter.IncludeReachableFrom.ToString(), "filter.IncludeReachableFrom");
 
             return new CommitLog(repo, filter);
         }