1 files changed, 17 insertions, 14 deletions
diff --git a/spec/ruby/library/matrix/element_reference_spec.rb b/spec/ruby/library/matrix/element_reference_spec.rb
index b950d1c391..286ab851bd 100644
--- a/spec/ruby/library/matrix/element_reference_spec.rb
+++ b/spec/ruby/library/matrix/element_reference_spec.rb
@@ -1,23 +1,26 @@
 require_relative '../../spec_helper'
-require 'matrix'
 
-describe "Matrix#[]" do
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  before :all do
-    @m = Matrix[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11]]
-  end
+  describe "Matrix#[]" do
+
+    before :all do
+      @m = Matrix[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11]]
+    end
 
-  it "returns element at (i, j)" do
-    (0..3).each do |i|
-      (0..2).each do |j|
-        @m[i, j].should == (i * 3) + j
+    it "returns element at (i, j)" do
+      (0..3).each do |i|
+        (0..2).each do |j|
+          @m[i, j].should == (i * 3) + j
+        end
       end
     end
-  end
 
-  it "returns nil for an invalid index pair" do
-    @m[8,1].should be_nil
-    @m[1,8].should be_nil
-  end
+    it "returns nil for an invalid index pair" do
+      @m[8,1].should be_nil
+      @m[1,8].should be_nil
+    end
 
+  end
 end