1 files changed, 11 insertions, 11 deletions
diff --git a/spec/mspec/spec/matchers/be_an_instance_of_spec.rb b/spec/mspec/spec/matchers/be_an_instance_of_spec.rb
index 7f2126df7d..7c74249d24 100644
--- a/spec/mspec/spec/matchers/be_an_instance_of_spec.rb
+++ b/spec/mspec/spec/matchers/be_an_instance_of_spec.rb
@@ -13,38 +13,38 @@ module BeAnInOfSpecs
   end
 end
 
-describe BeAnInstanceOfMatcher do
+RSpec.describe BeAnInstanceOfMatcher do
   it "matches when actual is an instance_of? expected" do
     a = BeAnInOfSpecs::A.new
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(a).should be_true
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(a)).to be_truthy
 
     b = BeAnInOfSpecs::B.new
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(b).should be_true
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(b)).to be_truthy
   end
 
   it "does not match when actual is not an instance_of? expected" do
     a = BeAnInOfSpecs::A.new
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(a).should be_false
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(a)).to be_falsey
 
     b = BeAnInOfSpecs::B.new
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(b).should be_false
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(b)).to be_falsey
 
     c = BeAnInOfSpecs::C.new
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(c).should be_false
-    BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(c).should be_false
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::A).matches?(c)).to be_falsey
+    expect(BeAnInstanceOfMatcher.new(BeAnInOfSpecs::B).matches?(c)).to be_falsey
   end
 
   it "provides a useful failure message" do
     matcher = BeAnInstanceOfMatcher.new(Numeric)
     matcher.matches?("string")
-    matcher.failure_message.should == [
-      "Expected \"string\" (String)", "to be an instance of Numeric"]
+    expect(matcher.failure_message).to eq([
+      "Expected \"string\" (String)", "to be an instance of Numeric"])
   end
 
   it "provides a useful negative failure message" do
     matcher = BeAnInstanceOfMatcher.new(Numeric)
     matcher.matches?(4.0)
-    matcher.negative_failure_message.should == [
-      "Expected 4.0 (Float)", "not to be an instance of Numeric"]
+    expect(matcher.negative_failure_message).to eq([
+      "Expected 4.0 (Float)", "not to be an instance of Numeric"])
   end
 end