diff --git a/lib/ohloh_scm/adapters/hg_adapter.rb b/lib/ohloh_scm/adapters/hg_adapter.rb
index 427668b1..8291de2c 100644
--- a/lib/ohloh_scm/adapters/hg_adapter.rb
+++ b/lib/ohloh_scm/adapters/hg_adapter.rb
@@ -1,9 +1,13 @@
 module OhlohScm::Adapters
-	class HgAdapter < AbstractAdapter
-		def english_name
-			"Mercurial"
-		end
-	end
+  class HgAdapter < AbstractAdapter
+    def english_name
+      "Mercurial"
+    end
+
+    def branch_name=(branch_name)
+      @branch_name = branch_name.to_s.empty? ? nil : branch_name
+    end
+  end
 end
 
 require_relative 'hg/validation'