diff --git a/LibGit2Sharp/Core/EnumExtensions.cs b/LibGit2Sharp/Core/EnumExtensions.cs
index cef84e775..40d6d4cd4 100644
--- a/LibGit2Sharp/Core/EnumExtensions.cs
+++ b/LibGit2Sharp/Core/EnumExtensions.cs
@@ -7,7 +7,7 @@ namespace LibGit2Sharp.Core
 {
     internal static class EnumExtensions
     {
-        public static bool HasAny<T>(this Enum enumInstance, IEnumerable<T> entries)
+        public static bool HasAny(this Enum enumInstance, IEnumerable<Enum> entries)
         {
             return entries.Any(enumInstance.HasFlag);
         }
diff --git a/LibGit2Sharp/Index.cs b/LibGit2Sharp/Index.cs
index 094e51573..4ab480992 100644
--- a/LibGit2Sharp/Index.cs
+++ b/LibGit2Sharp/Index.cs
@@ -268,13 +268,13 @@ public virtual void Move(IEnumerable<string> sourcePaths, IEnumerable<string> de
                 }
 
                 FileStatus sourceStatus = keyValuePair.Key.Item2;
-                if (sourceStatus.HasAny(new[] { FileStatus.Nonexistent, FileStatus.Removed, FileStatus.Untracked, FileStatus.Missing }))
+                if (sourceStatus.HasAny(new Enum[] { FileStatus.Nonexistent, FileStatus.Removed, FileStatus.Untracked, FileStatus.Missing }))
                 {
                     throw new LibGit2SharpException(string.Format(CultureInfo.InvariantCulture, "Unable to move file '{0}'. Its current status is '{1}'.", sourcePath, sourceStatus));
                 }
 
                 FileStatus desStatus = keyValuePair.Value.Item2;
-                if (desStatus.HasAny(new[] { FileStatus.Nonexistent, FileStatus.Missing }))
+                if (desStatus.HasAny(new Enum[] { FileStatus.Nonexistent, FileStatus.Missing }))
                 {
                     continue;
                 }
diff --git a/LibGit2Sharp/TreeEntryDefinition.cs b/LibGit2Sharp/TreeEntryDefinition.cs
index 371a4a36e..13e2fd2ea 100644
--- a/LibGit2Sharp/TreeEntryDefinition.cs
+++ b/LibGit2Sharp/TreeEntryDefinition.cs
@@ -14,7 +14,7 @@ public class TreeEntryDefinition : IEquatable<TreeEntryDefinition>
         private static readonly LambdaEqualityHelper<TreeEntryDefinition> equalityHelper =
             new LambdaEqualityHelper<TreeEntryDefinition>(x => x.Mode, x => x.TargetType, x => x.TargetId);
 
-        internal static readonly Mode[] BlobModes = new[] { Mode.NonExecutableFile, Mode.ExecutableFile, Mode.NonExecutableGroupWritableFile, Mode.SymbolicLink };
+        internal static readonly Enum[] BlobModes = new Enum[] { Mode.NonExecutableFile, Mode.ExecutableFile, Mode.NonExecutableGroupWritableFile, Mode.SymbolicLink };
 
         /// <summary>
         ///   Needed for mocking purposes.
diff --git a/LibGit2Sharp/TreeEntryTargetType.cs b/LibGit2Sharp/TreeEntryTargetType.cs
index c1137149e..b6a5a2d84 100644
--- a/LibGit2Sharp/TreeEntryTargetType.cs
+++ b/LibGit2Sharp/TreeEntryTargetType.cs
@@ -21,6 +21,7 @@ public enum TreeEntryTargetType
         /// <summary>
         ///   An annotated tag object.
         /// </summary>
+        [Obsolete("This entry will be removed in the next release as it is not a valid TreeEntryTargetType.")]
         Tag,
 
         /// <summary>