1 files changed, 15 insertions, 13 deletions
diff --git a/spec/ruby/library/set/flatten_merge_spec.rb b/spec/ruby/library/set/flatten_merge_spec.rb
index f2c99a9481..a0883ebc9d 100644
--- a/spec/ruby/library/set/flatten_merge_spec.rb
+++ b/spec/ruby/library/set/flatten_merge_spec.rb
@@ -2,22 +2,24 @@ require_relative '../../spec_helper'
 require 'set'
 
 describe "Set#flatten_merge" do
-  it "is protected" do
-    Set.should have_protected_instance_method("flatten_merge")
-  end
+  ruby_version_is ""..."3.5" do
+    it "is protected" do
+      Set.should have_protected_instance_method("flatten_merge")
+    end
 
-  it "flattens the passed Set and merges it into self" do
-    set1 = Set[1, 2]
-    set2 = Set[3, 4, Set[5, 6]]
+    it "flattens the passed Set and merges it into self" do
+      set1 = Set[1, 2]
+      set2 = Set[3, 4, Set[5, 6]]
 
-    set1.send(:flatten_merge, set2).should == Set[1, 2, 3, 4, 5, 6]
-  end
+      set1.send(:flatten_merge, set2).should == Set[1, 2, 3, 4, 5, 6]
+    end
 
-  it "raises an ArgumentError when trying to flatten a recursive Set" do
-    set1 = Set[1, 2, 3]
-    set2 = Set[5, 6, 7]
-    set2 << set2
+    it "raises an ArgumentError when trying to flatten a recursive Set" do
+      set1 = Set[1, 2, 3]
+      set2 = Set[5, 6, 7]
+      set2 << set2
 
-    -> { set1.send(:flatten_merge, set2) }.should raise_error(ArgumentError)
+      -> { set1.send(:flatten_merge, set2) }.should raise_error(ArgumentError)
+    end
   end
 end