diff --git a/lib/matrix.rb b/lib/matrix.rb
index 76bec92..ee5a716 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -86,6 +86,7 @@ end
 # * #inverse
 # * #inv
 # * #**
+# * #+@
 #
 # Matrix functions:
 # * #determinant
@@ -1040,6 +1041,10 @@ class Matrix
     end
   end
 
+  def +@
+    self
+  end
+
   #--
   # MATRIX FUNCTIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
   #++
diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb
index 7c466e6..13ffbb8 100644
--- a/test/matrix/test_matrix.rb
+++ b/test/matrix/test_matrix.rb
@@ -57,6 +57,10 @@ class TestMatrix < Test::Unit::TestCase
     assert_equal @m1.hash, @m3.hash
   end
 
+  def test_uplus
+    assert_equal(@m1, +@m1)
+  end
+
   def test_rank
     [
       [[0]],