diff --git a/app/models/repository.rb b/app/models/repository.rb
index 1aea88fe..5cb27c92 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -75,6 +75,10 @@ class Repository < ActiveRecord::Base
     true
   end
   
+  def supports_directory_revisions?
+    false
+  end
+  
   def entry(path=nil, identifier=nil)
     scm.entry(path, identifier)
   end
diff --git a/app/models/repository/git.rb b/app/models/repository/git.rb
index ebb0dd7e..13621f65 100644
--- a/app/models/repository/git.rb
+++ b/app/models/repository/git.rb
@@ -36,6 +36,10 @@ class Repository::Git < Repository
     'Git'
   end
 
+  def supports_directory_revisions?
+    true
+  end
+
   def repo_log_encoding
     'UTF-8'
   end
diff --git a/app/models/repository/mercurial.rb b/app/models/repository/mercurial.rb
index 19b47113..2090b7d2 100644
--- a/app/models/repository/mercurial.rb
+++ b/app/models/repository/mercurial.rb
@@ -41,6 +41,10 @@ class Repository::Mercurial < Repository
     'Mercurial'
   end
 
+  def supports_directory_revisions?
+    true
+  end
+
   def repo_log_encoding
     'UTF-8'
   end
diff --git a/app/models/repository/subversion.rb b/app/models/repository/subversion.rb
index b126d8d1..64bfcfb2 100644
--- a/app/models/repository/subversion.rb
+++ b/app/models/repository/subversion.rb
@@ -30,6 +30,10 @@ class Repository::Subversion < Repository
     'Subversion'
   end
 
+  def supports_directory_revisions?
+    true
+  end
+
   def repo_log_encoding
     'UTF-8'
   end