diff --git a/NEWS b/NEWS
index 42b304dcf8..3ea63f92d4 100644
--- a/NEWS
+++ b/NEWS
@@ -311,7 +311,7 @@ sufficient information, see the ChangeLog file or Redmine
 
   [New methods]
 
-    * Matrix#antisymmetric?
+    * Matrix#antisymmetric? / #skew_symmetric?
 
 [Net]
 
diff --git a/lib/matrix.rb b/lib/matrix.rb
index 7639b1de6d..1742847d3b 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -812,6 +812,7 @@ class Matrix
     end
     true
   end
+  alias_method :skew_symmetric?, :antisymmetric?
 
   #
   # Returns +true+ if this is a unitary matrix