diff --git a/lib/mongo/connection.rb b/lib/mongo/connection.rb
index c476a58..e84b7ba 100644
--- a/lib/mongo/connection.rb
+++ b/lib/mongo/connection.rb
@@ -470,6 +470,7 @@ module Mongo
     def read_primary?
       @read_primary
     end
+    alias :primary? :read_primary?
 
     # Close the connection to the database.
     def close
diff --git a/lib/mongo/repl_set_connection.rb b/lib/mongo/repl_set_connection.rb
index 2367be5..4f4fa00 100644
--- a/lib/mongo/repl_set_connection.rb
+++ b/lib/mongo/repl_set_connection.rb
@@ -137,6 +137,7 @@ module Mongo
     def read_primary?
       !@read_pool || @read_pool.length.zero?
     end
+    alias :primary? :read_primary?
 
     # Close the connection to the database.
     def close
diff --git a/test/replica_sets/connect_test.rb b/test/replica_sets/connect_test.rb
index 87ae0b2..691b556 100644
--- a/test/replica_sets/connect_test.rb
+++ b/test/replica_sets/connect_test.rb
@@ -32,6 +32,7 @@ class ConnectTest < Test::Unit::TestCase
       [RS.host, RS.ports[2]], :name => RS.name)
     assert @conn.connected?
     assert @conn.read_primary?
+    assert @conn.primary?
 
     assert_equal RS.primary, @conn.primary
     assert_equal RS.secondaries.sort, @conn.secondaries.sort
diff --git a/test/replica_sets/query_secondaries.rb b/test/replica_sets/query_secondaries.rb
index fe1770e..a6f1e1a 100644
--- a/test/replica_sets/query_secondaries.rb
+++ b/test/replica_sets/query_secondaries.rb
@@ -18,6 +18,7 @@ class ReplicaSetQuerySecondariesTest < Test::Unit::TestCase
 
   def test_read_primary
     assert !@conn.read_primary?
+    assert !@conn.primary?
   end
 
   def test_con