1 files changed, 1 insertions, 0 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb
index e6f5fe107c..d452bf459e 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -1149,6 +1149,7 @@ class Vector
     size.times do |i|
       yield @elements[i], v[i]
     end
+    self
   end
 
   #