1 files changed, 4 insertions, 4 deletions
diff --git a/spec/ruby/core/array/combination_spec.rb b/spec/ruby/core/array/combination_spec.rb
index 94a8e19341..ac570687ca 100644
--- a/spec/ruby/core/array/combination_spec.rb
+++ b/spec/ruby/core/array/combination_spec.rb
@@ -6,11 +6,11 @@ describe "Array#combination" do
   end
 
   it "returns an enumerator when no block is provided" do
-    @array.combination(2).should be_an_instance_of(Enumerator)
+    @array.combination(2).should.instance_of?(Enumerator)
   end
 
   it "returns self when a block is given" do
-    @array.combination(2){}.should equal(@array)
+    @array.combination(2){}.should.equal?(@array)
   end
 
   it "yields nothing for out of bounds length and return self" do
@@ -30,7 +30,7 @@ describe "Array#combination" do
   it "yields a copy of self if the argument is the size of the receiver" do
     r = @array.combination(4).to_a
     r.should == [@array]
-    r[0].should_not equal(@array)
+    r[0].should_not.equal?(@array)
   end
 
   it "yields [] when length is 0" do
@@ -58,7 +58,7 @@ describe "Array#combination" do
           @array.combination(-1).size.should == 0
           [].combination(-2).size.should == 0
         end
-        it "returns the binomial coeficient between the array size the number of combinations" do
+        it "returns the binomial coefficient between the array size the number of combinations" do
           @array.combination(5).size.should == 0
           @array.combination(4).size.should == 1
           @array.combination(3).size.should == 4